Astronomy Podcasts

Listen to great podcasts with interviews and discussions associated with astronomical news and theories.

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Episode 267: DOWNLINKSpaceflight news — Perseverance launch slips again. — Centaur has been repaired. Short and Sweet — Rocket Lab suffers second-stage failure and loss of vehicle.

The Orbital Mechanics Shared .

84E-96-Target AsteroidsMany scientists have been started on their career paths by an interest in astronomy and the mysteries of space.

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AaS! 131: What's so cool about the TRAPPIST-1 system?Is it really habitable? How are we figuring all this out? I discuss these questions and more in today's Ask a Spaceman!

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Red SquareA study last year, for example, said the system probably consists of two stars. The main star is about 15 times the mass of the Sun.

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Coronavirus and Conspiracy Theories, with Michael ShermerNeil deGrasse Tyson, comic co-host Chuck Nice, and Michael Shermer, author and Founding Publisher of Skeptic Magazine, investigate the rise of conspiracy theories during the COVID-19 > NOTE: StarTalk+ Patrons and All-Access subscribers can watch or listen to this entire episode commercial-free here: > Thanks to our Patrons Sami Succar, Kaleb...

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Serpens NurseriesMost of the stars in these clusters are small and faint. But a few are members of the most impressive classes of stars.

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Moon and PlanetsTwo bright planets accompany the Moon across the sky tonight. Brilliant Jupiter, the solar system's largest planet, is close to the upper right of the Moon as they climb into good view around 10:30 or 11.

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Short-Night MoonWe see so little of tonight's Moon because the Sun and the full Moon are like two people on a seesaw - when one is up, the other is down.

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287.3. horizonsThe edges of the knowable.

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Making a Phenom: The MindIn Episode Two of our 'Making a Phenom' mini-series, host Neil deGrasse Tyson and co-hosts Gary O'Reilly and Chuck Nice investigate the brain of an elite athlete with neuroscientist Heather Berlin, PhD, and kinesiologist and author Joan Vickers, > NOTE: StarTalk+ Patrons and All-Access subscribers can watch or listen to this entire episode...

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Space Policy Edition: A Trillion-Dollar Space Economy?Dr. Bhavya Lal joins the show to discuss the size of the space economy, where it's going, and how the term itself can mean many different things to many different people.

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595-Monster CometMy Catalina Sky Survey teammate Teddy Pruyne was asteroid hunting in the constellation of Pegasus with our Schmidt telescope on Mt. Bigelow, Arizona when he discovered an unusually bright new comet.

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Faint NeighborsLightweight stars aren't squeezed as tightly, so they consume their fuel at a slower pace.

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Moon and AntaresConsider its apparent size in the sky, known as angular diameter. The star's outer layers are quite thin.

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Jim Bell Sends New Eyes to MarsMastcam-Z is the main camera system that will soon leave for Mars as part of the Perseverance rover.

Planetary Radio Shared .

July 2020: Welcome Jupiter and SaturnJuly's 11-minute Sky Tour astronomy podcast describes what to see in the summer sky in a casual, engaging way that your whole family can enjoy.

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Seventh MonthCaesar adopted this system, but he kept the names of the months from the Roman calendar.

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July 2020 Part 1The Discussion : This month Jeni's getting frustrated with the politics of peer review, Paul's seen an uptick in noctilucent cloud hunting and public interest in astronomy in general during lockdown.

Awesome Astronomy Shared .

Episode 266: Demo-2 and the SpacewalksSpaceflight news — Demo-2 and spacewalks — Suborbital Crew — SpaceShip Two news. Short and Sweet — ISRO opens up spaceflight to the private sector.

The Orbital Mechanics Shared .

Space Tourism Promises Fresh Perspective Of Planet EarthAs early as next year, space tourism company Space Perspective will ferry humans to the edge of space using a giant hydrogen-filled balloon.

Are We There Yet? Shared .

Liftoff 127: Wormy Space CoinThis week: black holes doing weird black hole things, a progress report on the SLS and a discussion of how some of NASA's facilities should be renamed.

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83E-95-Phantom Meteor ShowerComet Blanpain was discovered in 1819 and was described as having a small confused nucleus.

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DefinitionsA brown dwarf probably is born in the same way as a star - from the collapse of a cloud of gas and dust.

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Cosmic QueriesNeil deGrasse Tyson and comic co-host Chuck Nice answer a grab bag of fan-submitted Cosmic Queries on black holes, dark matter, aliens, colonizing planets, Sir Isaac Newton, and a whole lot > NOTE: StarTalk+ Patrons and All-Access subscribers can watch or listen to this entire episode commercial-free here: > Thanks to our Patrons Nigel Adams,...

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Ep. 576: Summer Stargazing SpecialIt's time, once again, for Astronomy Cast to go on hiatus. You've got a couple of months on your own to explore the night sky.

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Shuttle-MirLinks between the two space programs had been growing for several years. Another shuttle had flown around Mir earlier in 1995.

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Moon and SpicaThe temple gained greater fame a few thousand years later. A Greek astronomer noticed that the temple no longer aligned with Spica's rising point.

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LupusSupernova 1006 was different from the kind of supernova that Alpha Lupi will become, though.

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594-Earth GrazerAsteroid hunters have discovered that the Earth encounters many tiny asteroids as it zips around the Sun at 67,000 miles per hour.

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Nesting StarsThe other cluster, Messier 6, is above M7. It's farther away than M7, so it doesn't look as big or as bright.

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287.2. Snippet_The case for accelerating expansionFaster and faster.

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The StingerThe brighter of the stinger stars is Lambda Scorpii. It's actually a system of three stars.

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China on the Final FrontierLow Earth orbit, the Moon, Mars, even Neptune and the edge of the solar system - China's ambitious plans for space exploration and development are laid out by Planetary Society contributing editor and Chinese space program expert Andrew Jones.

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Moon and RegulusNo matter how unsettled our world gets, there's one thing you can always count on: the clockwork precision of the heavens.

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Episode 265: VIPER Will ZootSpaceflight news — Astrobotic to deliver VIPER rover to Moon. — Some instruments will fly on earlier CLPS payloads — Crew Dragon Endeavour is still nominal.

The Orbital Mechanics Shared .

Race In SpaceProtests across the country have highlighted systemic racism and turned the national conversation towards equality and justice.

Are We There Yet? Shared .

82E-94-You Are Close To Outer SpaceHow often do you traveled 5, 10, or more miles on a shopping trip? If instead of traveling on the Earth's surface you were to travel 6 miles straight up, to the realm of the jet airliner, you would likely need oxygen to stay conscious.

Travelers In The Night Shared .

Moon and the BeehiveAstronomers have discovered thousands of planets in other star systems. You might think they'd have found many of them in clusters - places where hundreds of stars are close together.

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Ep. 575: Observing the MoonAs amateur astronomers, we curse the Moon every month. Seriously, why doesn't someone get rid of that thing?

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Oort CloudBut that's right next door compared to the farthest objects of all - the members of the Oort Cloud.

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CentaursThe ancients loved creatures that were crosses between humans and something else. One of the favorites of the Greeks, for example, was the centaur.

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Nova VulpeculaDuring the 20th century, astronomers first thought the object was a nova. Such a blast is caused when hot gas stolen from a companion star piles up on a dead star known as a white dwarf.

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Making a Phenom: GeneticsIn Part One of our Making a Phenom mini-series, Neil deGrasse Tyson and co-hosts Gary O'Reilly and Chuck Nice explore sports genetics alongside investigative reporter and author David Epstein and Stuart Kim, PhD, Founder and CEO of > NOTE: StarTalk+ Patrons and All-Access subscribers can watch or listen to this entire episode commercial-free.

StarTalk Radio Shared .

593-Kacpers First CometSpace, Asteroid Hunting, and Astronomy, an insider view. The music is "Eternity" by John Lyell.

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Deflecting asteroids with DART and HeraAhead of Asteroid Day on 30 June, we take a look at NASA's DART and ESA's Hera mission.

Sky at Night Magazine Shared .

Summer SolsticeAmong other artifacts, the site contains a 12-foot-wide circle of small stones. Two pairs of stones stand across the circle from each other.

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Moon and VenusAs they sped past Venus in June of 1985, each one dropped off a lander and a balloon.

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287.1. Snippet_What's in a black holeCheap Astronomy offers you 10 minute weekly podcasts on a wide range of astronomy, astrophysics, cosmology, space science and space exploration topics.

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LightSail 2: A Year of Solar SailingThe LightSail 2 team and 50,000 supporters around the world will celebrate the little spacecraft's first anniversary on orbit in a few days.

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The Final ParsecAs they get especially close, though, they might hold their positions - never merging to form a single black hole.

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Episode 264: Ad Astra Per JustitiaSpaceflight news — Loverro misconduct update. — Kathy Lueders selected to lead HEO Mission Directorate.

The Orbital Mechanics Shared .

How NASA's Reliance On Commercial Companies Is Shaping Space ExplorationNASA is relying more and more on the private sector to help its exploration efforts - from building the next moon lander to transporting astronauts to the International Space Station.

Are We There Yet? Shared .

81E-93-Name That AsteroidIt has been traditional for an asteroid to be named by its discoverer. The 1990s were the golden age for private individuals as computerized telescopes and electronic cameras became affordable and readily available.

Travelers In The Night Shared .

AaS! 130: What's the most amazing thing about the universe?How is it all connected? How does universality give physics the power to explain everything?

Ask a Spaceman! Shared .

Black-Hole WeirdnessIf you were to fall into a black hole a few times the mass of the Sun, for example, your body would be stretched, squeezed, and pulled apart atom by atom.

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Ep. 574: Trojan AsteroidsWe imagine the asteroid belt as the place where all the rocks hang out in the Solar System, but there are two huge bands of asteroids that orbit the Sun with Jupiter called the Trojans.

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Liftoff 126: Astronauts are Really Good at MovingThe crew of Demo-2 are likely working on orbit until August, while here on the ground, COVID-19 is taking its toll on NASA schedules.

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Splashdown!Following the successful Crew Dragon launch, Apollo 8 commander Frank Borman talks about the terrors of splashdown, and Shuttle astronaut and aquanaut Kathy Sullivan describes the choreography of spacewalking.

Naked Astronomy, from the Naked Scientists Shared .

June 2020 Part 2The Discussion :. Main news story: American commercial crewed launches have finally arrived. Q&A : Will the Lunar Gateway be visible from Earth?

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Windy Black HolesThe black holes in the hearts of galaxies are millions or billions of times the mass of the Sun.

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Lexell's CometLexell's Comet passed closest to Earth on July 1st. Had it hit our planet, it was big enough to cause destruction on a global scale.

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HayabusaOnce there, it was supposed to drop to the surface and fire some small "bullets" into the asteroid.

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592-InvasionDue to thoughtless outdoor night lighting on the surface and satellites in space the natural night sky is becoming a vanishing treasure.

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More Moon and MarsDust devils could be a problem for future space missions. Recent research suggests that it's not just the wind that picks up the dust.

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Moon and MarsDuring winter, though, a cap is topped by a layer of frozen carbon dioxide - dry ice.

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Staying Alive in SpaceKeeping humans alive and well in space is hard enough. How will this be accomplished on a 3-year journey to Mars and back?

Planetary Radio Shared .

CHEOPS: Interview with exoplanet scientist Kate IsaakThe European Space Agency's CHEOPS mission is currently studying planets orbiting distant stars, known as exoplanets.

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Alpha Centauri PlanetsIf you want to find neighbors, you probably start by looking next door, not blocks away.

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287. Dear Cheap AstronomyThis is our near future, unless it doesn't happen.

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James Webb Space Telescope: Finishing The Next Big ObservatoryThe James Webb Space Telescope is nearing the finish line, with a campaign of full systems tests on the horizon.

Are We There Yet? Shared .

80E-92-An Earth Approaching CometMy Catalina Sky Survey teammate Richard Kowalski has discovered an Earth approaching comet that comes within 18 million miles of our home planet.

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Alpha CentauriThere's actually a third star in the Alpha Centauri system - Proxima Centauri - that's a long way from the other two.

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Ep. 573: Exoplanet AtmospheresNot only have astronomers discovered thousands of exoplanets, but they're even starting to study the atmospheres of worlds thousands of light-years away.

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Moon and SaturnBigger telescopes allowed astronomers to see Titan more clearly, yet they revealed few details. That's because a thick "haze" at the top of the atmosphere conceals the surface.

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Black Lives MatterSome black voices and hashtags to amplify and listen to.

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Moon and JupiterThe moons Europa, Ganymede, and Callisto appear to have oceans below their icy crusts. Europa is the most intriguing of the moons because its crust is fairly thin - in some places, as little as a mile or two.

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MuscidaRight now, the star's heart is quiet. It's converted its original hydrogen fuel to helium.

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Coronavirus and SportsHow has sports been impacted by the COVID-19 pandemic? Neil deGrasse Tyson explores this and more with co-hosts Gary O'Reilly and Chuck Nice, economist and author Tobias Moskowitz, PhD, and neuroscientist Heather Berlin, > NOTE: StarTalk+ Patrons and All-Access subscribers can watch or listen to this entire episode commercial-free here: >...

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Space Policy Edition: NASA's Gamble Pays OffSpaceX's Crew Dragon safely carried 2 astronauts to the ISS, nearly a decade after NASA made a huge bet on commercial partnerships to solve a problem of access to the space station.

Planetary Radio Shared .

591-Teddy's First CometOne of the perks of being an asteroid hunter is to discover a comet and have it carry your name.

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New MissionsVenus is hidden from view - in more ways than one. It's passing between Earth and the Sun right now, so it's hidden in the Sun's glare.

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Crew Dragon Thrills While Mars ChillsThis episode opens with a special message about The Planetary Society's response to recent news, followed by a period of silence that marks the unjust loss of George Floyd and other black men and women.

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Venus DisappearsVenus has gone away for a while. After reigning as the brilliant "evening star" for months, the planet has disappeared in the twilight.

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Inspiration and Innovation: What We Can Learn From SpaceX's Crew Dragon LaunchOn Saturday, SpaceX successfully launched two NASA astronauts from the Kennedy Space Center in Florida on a mission to the International Space Station.

Are We There Yet? Shared .

Liftoff 125: A Sparkly DinosaurThe age of Commercial Crew has arrived, with Doug Hurley and Bob Behnken arriving at the International Space Station safely after riding a Falcon 9 there this weekend.

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Episode 263: Flat ScreenSpaceflight news — Demo-2 mission: Endeavor docks with ISS. — A bell in Unity is rung twice to announce the arrival and departure of vehicles.

The Orbital Mechanics Shared .

79E-91-Faster Than A Speeding BulletMore powerful than a locomotive. Its not Superman, its a meteoroid. Yes, a volleyball sized stoney meteoroid, which is typically traveling 15 to 60 times faster than a high powered rifle bullet, has 8 times the kinetic energy of a passenger diesel electric locomotive traveling at 100 miles per hour.

Travelers In The Night Shared .

AaS! 129: Did the big bang make black holes?What kind of crazy physics made primordial black holes? What does that have to do with the LIGO observations of merging black holes?

Ask a Spaceman! Shared .

Heavyweight MergerThe merger probably began when one of the original stars reached the end of its "normal" lifetime.

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286.5. Snippet_Other lifeYep, aliens again.

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Ep. 572: Twists in Planet FormationWe're all looking forward to the next generation of exoplanetary research, where we get to see pictures of planets directly.

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June 2020: Stars of Early SummerOur 10-minute Sky Tour astronomy podcast guides you to planets, stars, and constellations in the early-summer sky in a casual, engaging way that your whole family can enjoy.

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Omega CentauriOmega Centauri is classified as a globular cluster. It's the biggest and brightest in the galaxy.

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June 2020 Part 1The Discussion :. Main News story: Capturing a huge exoplanet - or a low mass star - forming in Auriga.

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Ophiuchan ClustersMessier 14, for example, is a million times the Sun's mass. It doesn't look as bright as M10, though, because it's twice as far.

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OphiuchusOphiuchus is a big constellation. It's low in the sky at nightfall, and stretches all the way from due east to due southeast.

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590-Noctilucent CloudsSee Climate Change! Noctilucent Clouds exist at more than 50 miles above the Earth's surface or about 4 times higher than the tops of the most intense tropical thunder storms.

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Keeping Time IIIThe second has been the most basic unit of time for millennia - since long before it could even be measured.

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Keeping Time IIA day on Earth consists of 24 hours, 1,440 minutes, or 86,400 seconds. But not all days are equal.

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Celebrating 30 Years of Hubble with Astronaut John GrunsfeldFormer astronaut and NASA Associate Administrator John Grunsfeld is often called the Hubble Repairman. He made three space shuttle trips to the space telescope to repair and upgrade it.

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Keeping TimeKeeping time is a tough job. If you travel, you might cross several time zones - there are 38 of them around the world.

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It's Finally Here: NASA and SpaceX Set To Launch Humans From U.S. For The First Time Since Space ShuttleThe launch of American astronauts from American soil is happening this week with the launch of NASA's Bob Behnken and Doug Hurley on a SpaceX rocket.

Are We There Yet? Shared .

Episode 262: No Loverro LostNASA and SpaceX: Journey to the Future to air May 25 at 9 p.m.

The Orbital Mechanics Shared .

78E-90-Shine Little Asteroid ShineRecently I was observing with the NASA funded Catalina Sky Survey 60 inch on Mt. Lemmon, Arizona when I discovered a 200 foot diameter asteroid, 2014 SC324.

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Ep. 571: Extreme BinariesWe're familiar with regular binary stars. Two stars orbiting each other. Simple. Of course, the Universe has come up with every combination of things orbiting other things.

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Moon and GeminiBut during a fight, the mortal Castor was killed. Pollux was inconsolable. He begged Zeus to allow him to die so he could join Castor.

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COVID-19 and Mental HealthNeil deGrasse Tyson explores how the COVID-19 pandemic impacts mental health alongside comic co-host Chuck Nice, neuroscientist Heather Berlin, PhD, and StarTalk Sports Edition co-host Gary > NOTE: StarTalk+ Patrons and All-Access subscribers can watch or listen to this entire episode commercial-free here: > Thanks to our Patrons Bryan Poole,...

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Quiet NeighborIt does have one distinction, though. It lines up in such a way that any astronomers in the system could see Earth pass across the face of the Sun.

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286.4. Snippet_Hydrogen lifeIt's elemental.

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Twin JewelsThe rate of those reactions is driven by the star's mass. Alphecca's yellow star, for example, is a bit less massive than the Sun.

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Moon and CompanionsVesta is the smallest body in the solar system to have such a layered structure - it's just 325 miles in diameter.

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Pro Athlete Cosmic QueriesNeil deGrasse Tyson, alongside co-hosts Gary O'Reilly and Chuck Nice, answer Cosmic Queries from professional athletes including Olympic skier Lindsey Vonn, rugby player Nicole Heavirland, skateboarder Joey Brezinski, and boxer Cam F. Awesome.

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589-Defending EarthThe International Asteroid Warning Network, or IWAN for short has been established to link scientists who are discovering, monitoring, and physically characterizing potentially dangerous asteroids.

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Deadly SunDolphins and whales occasionally strand themselves on the beach. Biologists say there are many possible causes: injury, disease, human-made sounds, and others.

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Venus special: farewell to the evening starWe bid Venus farewell as the planet begins to disappear from our evening sky, and take a look at the planetary geometry that has made it such a glorious sight over the past few months.

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Stellar FlashT Ursae Minoris is in Ursa Minor, the little bear. As night falls, it's above the Little Dipper The star is nearing the end of its life.

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Crew Dragon Deep Dive with Astronaut Garrett ReismanEngineer and former astronaut Garrett Reisman spent four months on the International Space Station before moving to SpaceX.

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Venus and MercuryVenus is the brighter of the two worlds. It's the brilliant "evening star." It's the second planet out from the Sun.

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Episode 261: Pessimism SandwichSpaceflight news — Three-part NASA Lunar News. — Plans for Gateway and Artemis undergo refinement.

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Kennedy Space Center Director Bob Cabana Ready For First Human Spaceflight Since ShuttleIn a little over a week, SpaceX will attempt to launch two NASA astronauts to the International Space Station from Florida - the first human launch from the United States in nearly a decade.

Are We There Yet? Shared .

Liftoff 124: Space KoozieThe Artemis Accords have been unveiled, but will their adoption be hurt by their rollout?

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77E-89-Witnessing An Asteroid ImpactRecently I discovered a small asteroid with the NASA funded Catalina Sky Survey 60 inch telescope on Mt. Lemmon.

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AaS! 128: Why are we missing all the baryons?What is the "missing baryon problem"? How do we know how many baryons there ought to be?

Ask a Spaceman! Shared .

'Sailing' StarsAnd even though it's only a few percent of the Sun's age, Gamma Corvi's bright star is nearing the end of its life.

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Ep. 570: Discovering CometsDiscovering comets is one of the fields that amateurs can still make a regular contribution to astronomy.

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Mount St. HelensAs the Sun rose on May 18th of 1980, Mount St. Helens was the fifth-tallest mountain in Washington State - almost 10,000 feet tall.

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The KeystoneZeta is the closest of the four, just 35 light-years away. It actually consists of two stars.

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286.3. Snippet_Big Bang CMBYou can't ignore the past.

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WFIRST: a new era for exoplanet huntingWe speak to Dr Savannah Jacklin about the Wide Field Infrared Survey Telescope, a new mission to discover planets orbiting distant stars using a technique predicted by Einstein over 100 years ago.

Sky at Night Magazine Shared .

Rescue!Max Planck was in a bad way. The German physicist was the leader in the field of quantum theory - understanding the universe on the tiniest of scales.

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588-Encounter With SaturnFrom 1663 to 2011, seven comets had close encounters with Jupiter and two had close encounters with Saturn.

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Father HellFather Maximilian Hell had received an offer he couldn't refuse. King Christian VII of Denmark and Norway had invited him to lead an expedition to observe a transit of Venus across the Sun in 1769.

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May 2020 Part 2The Discussion : Ralph channels his inner Churchill, while Jen goes on about Tiger King and her upcoming Cafe Scientifique talk.

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Speedy StarsAnd the third way involves a stellar explosion. When a massive star explodes as a supernova, it loses most of its mass.

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Looking for Life in Alien OceansJet Propulsion Lab astrobiologist Kevin Hand has just written Alien Oceans: The Search for Life in the Depths of Space.

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Episode 260: DOWNLINKSpaceflight news — China's big Long March 5B flight — — The flight — — The capsule landing — — Flexible Inflatable Cargo Re-entry Vehicle — — The unguided first-stage reentry.

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Covering Space: Correspondent Peter King Ready To Report Human Launches Once MoreFor the past 25 years, CBS radio correspondent Peter King has covered human launches from Florida - including the last Space Shuttle launch in 2011.

Are We There Yet? Shared .

76E-88-Space RocksAsteroid 2008 TC3 is the only asteroid which was observed to be hurtling between planets, flying through our atmosphere, and pieces of it found to be lying on the Earth's Surface.

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Ep. 569: Ethics of Commercial and Military Space, Part 1: Private Space FlightEvery year, more and more people are making their way to space. Some private citizens have already gotten their astronaut wings, paying for a trip to space out of their own pocket.

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Maiden FlightWith astronauts preparing for the first flight in the Dragon spacecraft, space reporter Sarah Cruddas discusses this new era in space travel.

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286.2. spaceIt's out there.

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North PoleAstronomers have devised a set of galactic coordinates. The "east-west" line is marked by the plane of the galaxy's disk.

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587-Quiet SunImages of the quiet Sun during a solar minimum make it look like a relatively static peaceful place.

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Ducking SatellitesThe odds of such an impact are getting better all the time. More than 9,000 satellites have been sent into orbit, and about half are still there.

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The Crew Dragon Countdown Begins, With Former NASA Deputy Administrator Lori GarverAmerican astronauts are about to fly from Florida to the International Space Station for the first time in nine years, thanks to the commercial space development initiative advocated for years by Lori Garver.

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Satellites GaloreIn February, the International Astronomical Union said it considers the satellites "worrisome." The constellations of satellites, it said, "will have a negative impact on the progress of ground-based astronomy." SpaceX, which has already launched hundreds of satellites, is testing a new coating to make the craft darker.

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The Next Mission To Mars: NASA Rover Will Search For Signs Of Ancient LifeThis summer, NASA will launch a 2,000 pound robot to the surface of Mars.

Are We There Yet? Shared .

Episode 259: Human Moon LandersSpaceflight news — NASA selects companies to develop Human Landing System for Artemis. — Source Selection Statement.

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Liftoff 123: Lunar CamperNASA has unveiled its plans to source a lunar lander for the Artemis program, while Hubble celebrates its 30th anniversary.

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75E-87-MOM Reaches MarsIndia's Mars Orbiter Mission or MOM has made the 10 month journey from Earth to Mars.

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AaS! 127: What was Newton's big deal?Why was his work so controversial? Why are his laws of motion so radical? I discuss these questions and more in today's Ask a Spaceman!

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Bright LightsThousands of satellites are in orbit right now. Most of them are too small, too far, or too dark to see.

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Special DaysAnd today celebrates some fictional accomplishments in space. It's Star Wars Day. May the Fourth was picked as a pun on the line "may the force be with you." Star Wars Day started in Toronto almost a decade ago, and caught on around the world.

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Eta Aquarid MeteorsA modest meteor shower is at its best the next couple of nights. At its peak, the Eta Aquarid shower might produce a couple of dozen meteors per hour.

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Venus and El NathVenus, the "evening star," flirts with the tip of one of the bull's horns for the next few weeks.

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Space Policy Edition: Our Moral Obligation to Explore SpaceAre we morally obligated to pursue space exploration? What ethical considerations should we consider when creating space policy?

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586-northern PhaMy Catalina Sky Survey teammate David Rankin was observing in the constellation of Ursae Major with our 60 inch telescope on Mt. Lemmon, Arizona when he spotted a rare fast moving point of light far north of the area in the sky which contains the planets and most of the asteroids.

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May 2020: Venus and Mercury at DuskWould you like to learn your way around the night sky in just 10 minutes?

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286.1. Snippet_Solar fluxOur moment in the Sun.

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The Loneliest Human: Space Boffins SpecialIn a special bonus episode of Space Boffins Richard Hollingham celebrates Apollo 15 astronaut Al Worden, who died in March.

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May 2020 Part 1The Discussion : The live recording of our monthly astronomy show to provide a bit of extra entertainment and interactivity while people are cooped up at home sitting out the coronavirus.

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Aging ExplorersThey're losing power, so most of their instruments have been turned off. And they have occasional problems.

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Ep. 568: In Situ Resource UtilizationThe key to surviving in space will be learning how to live off the land.

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Life on Mars: Joining the Quest with Penny Boston and Jim GreenMat Kaplan recently hosted the first of a series of Explore Mars live and interactive events.

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Land of ExplorersOne of the canyons, for example, is Argo Chasma. It's named for the ship that carried Jason and the Argonauts.

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The Fight For Women AstronautsThe Mercury 7 might have had the right stuff and made the headlines, but behind the scenes 13 women were being tested to become astronauts.

Are We There Yet? Shared .

Episode 258: Firefly PaydayOriginally autogenously pressurized tanks. — Fire in Jan due to misconfigured software. — Spaceflight Industries In process of being bought by Mitsui and Yamasa.

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74E-86-A Close FlybyRecently a semi-trailer trailer truck sized asteroid passed only 20,800 miles above the Earth's surface.

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Southern PinwheelMessier 83 is a beautiful spiral that we view face-on. It's only about 15 million light-years away, so the view is especially good.

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COVID-19 Update, with Neil deGrasse TysonThis episode was recorded on April 23, 2020. Note - This episode contains factual discussions of the ongoing COVID-19 pandemic and may contain certain topics and discussion of statistics and information that might cause distress.

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Messier 53M53 orbits the core, so it's a member of the galaxy. But that might not always have been the case.

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Stadiums of the FutureNeil deGrasse Tyson, co-hosts Gary O'Reilly and Chuck Nice, and Benjamin Brillat of IBM Sports investigate modern stadium design and tech including the new SoFi Stadium in Los > NOTE: StarTalk+ Patrons and All-Access subscribers can watch or listen to this entire episode > Photo Credit: Artist Rendering of Sofi Stadium via sofistadium.com.

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585-Mini Moon IIMy Catalina Sky Survey teammates Kacper Wierzchos and Teddy Pruyne were asteroid hunting in the constellation of Virgo with our 60 inch telescope when they spotted a second natural Moon.

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The Great DebateTelescopes routinely study galaxies that are billions of light-years away. But just a century ago, no one knew that the universe extended that far.

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Ep. 567: When Satellites Need a House CallSpace is really far away, so when you send a satellite out into the void, that's pretty much the last you're going to be able to work on it.

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Hubble at 30: how the space telescope changed astronomy foreverOver the past three decades, the Hubble Space Telescope has revolutionised our view of the cosmos.

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UniverseThe word comes from Latin roots that mean "one" and "to turn." So "universe" can be taken to mean "everything is turning together." A 19th-century astronomy textbook, in fact, said that was what the word was intended to convey.

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286. Fantastic Physics FormulasFalling, as little as possible.

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The Royal Astronomical Society at 200"The object of THE ROYAL ASTRONOMICAL SOCIETY shall be the encouragement and promotion of Astronomy, Solar-System Sciences, Geophysics and closely related branches of science." That's what you'll find on the website of the RAS.

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Earth DayApollo 8 carried the first astronauts to the Moon, at the end of 1968. They orbited the Moon on Christmas Eve and Christmas Day.

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Episode 257: Ocean of StormsSpaceflight news — Intuitive Machines selects lunar landing site. — Nova-C's publicity page. — Maps of Vallus Schröterie in Oceanus Procellarum — SpaceX and Gateway Logistics Services.

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Remote Rovin': NASA Mars Rover Drivers Are Working From Home. Here's How They Do It.With most of NASA teleworking to prevent the spread of coronavirus, missions exploring our solar system continue.

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Liftoff 122: Get an Exoplanet; Lose an ExoplanetMay seems to be the Month of Commercial Crew! Also: NASA is working from home, an exoplanet may be no more and a look at a future Mars sample return mission.

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73E-85-Obscuring The CosmosImagine a world where people are never able to see the Milky Way or a meteor streaking like a falling star in the night sky.

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AaS! 126: What's the wildest weather in the solar system?What makes the Earth's atmosphere so special? What makes the atmospheres of other planets so special?

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Double ShowersThe Lyrids are spawned by Comet Thatcher. This ball of ice and rock orbits the Sun once every 415 years.

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Coronavirus and Climate Change, with Neil deGrasse TysonNeil deGrasse Tyson explores coronavirus and climate change with co-host Chuck Nice, Gavin A. Schmidt, PhD, Director of the NASA Goddard Institute for Space Studies, and climate scientist and Global Weirding host Katharine Hayhoe, > NOTE: StarTalk+ Patrons and All-Access subscribers can watch or listen to this entire episode commercial-free...

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The Space Show this weekThe guests and topics of discussion on The Space Show this week: 1. Monday, April 20, 2020; 7 pm PDT : Christopher Richins will given and update on RBC Signals, a satellite ground...

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Lyrid MeteorsAlthough the season doesn't offer a great shower, a pretty good one should reach its peak tomorrow night: the Lyrids.

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Tracking MeteorsAnd the networks allow scientists to track down possible meteorites. Most of the rocks that hit Earth burn up in the atmosphere or fall into the oceans.

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Live Lockdown Q&A ShowYou can watch the video of this recording at.

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Student and amateur CubeSat news roundupA sampling of recent articles, press releases, etc. related to student and amateur CubeSat / SmallSat projects and programs : * A review of the Virginia Cubesat Constellation program in which a consortium of universities in the state built three cubesats: Virginia Cubesat Constellation, Mike McPherson, KQ9P A report about the...

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MeteoritesMeteorites have survived the fiery plunge through Earth's atmosphere to reach the ground. Some of them had orbited the Sun on their own since the birth of the solar system.

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584-Pop Up CometsMy Catalina Sky Survey teammate David Rankin was asteroid hunting in the constellation of Virgo when he spotted a fuzzy ball with a tail moving through the night sky.

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Apr 17th: Rise of the Space Age MillennialsHere's the weekly news roundup! @WSHCrew has black holes folding light back, new earth-size planet, lunar asteroid collision, and anisotropy universe.

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Crater HuntingThe impact melted millions of tons of rock and dirt and blasted them high into the sky.

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Ep. 566: When Comets Fall ApartAs everyone knows, the Universe owes us a bright comet. There have been a lot of promising candidates, but in the end, they always fail to live up to our expectations.

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RelicsScientists at the Field Museum in Chicago recently studied some of that debris. They used acid to dissolve the stuff that formed inside the solar system, leaving the grains from beyond it.

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NASA Administrator James Bridenstine ReturnsWe talk with NASA's leader about how the agency is meeting the challenge of the pandemic.

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Episode 256: Grappling HookTim Dodd published a great interview with Peter Beck. Short and Sweet — Mars helicopter has been attached to NASA rover.

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Teaching The Next Generation Of Stargazers And Space ExplorersSome seniors at Marjory Stoneman Douglas in Parkland, Florida are learning about the night sky and the universe they live in thanks to their astronomy teacher Kyle Jeter.

Are We There Yet? Shared .

April 2020 Part 2Don't forget to join us for our live shows on 16th and 27th April at.

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Travelers-Martian MeteoritesRecently, Dr. Stephanie C. Werner of the University of Oslo in Norway and her colleagues have discovered the source of some of the Martian meteorites found on Earth.

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Cubesats, Hubble and Apollo 13 TroubleRichard Hollingham and Sue Nelson celebrate Hubble's 30th birthday with Shuttle astronaut Kathy Sullivan, who deployed the space telescope, and hear from NASA engineer Jerry Woodfill about his warning alarm system for Apollo 13, celebrating its 50th lucky escape anniversary.

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Apollo 13An oxygen tank had exploded, damaging other systems and shutting down the mothership's fuel cells.

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Galactic FireworksNGC 6946 is the galactic equivalent of the Fourth of July - the source of a whole lot of fireworks.

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Apr 11th: NOIRLab UpdatesUpdates about NSF's National Optical Infrared Astronomy Research Laboratory. First, the organization has a new name: NOIRLab.

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Vela SupernovaThe Moon is the biggest single object in the night sky that's visible to the eye alone.

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Ep. 565: When Worlds CollideSo much of our Solar System has been shaped by enormous collisions early on in our history.

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Wrestling the Pandemic, with WWE's Xavier WoodsNeil deGrasse Tyson and co-hosts Gary O'Reilly and Chuck Nice step into the ring with WWE superstar Xavier Woods to explore professional wrestling, Esports, and how to keep sports thriving during the COVID-19 > NOTE: StarTalk+ Patrons and All-Access subscribers can watch or listen to this entire episode commercial-free here: > Photo Credit: WWE.

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583-A Woman and PlutoElizabeth William graduated from MIT in 1903 as one of the top students in physics and mathematics.

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Apr 10th: Col. Mike Mullane, AstronautIt's time for weekly space hangout discussion and news roundup. This time we have astronaut Mike Mullane and more news.

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Solar MinimumThe Sun goes through an 11-year cycle of magnetic activity. At the cycle's peak, scores of spots mar the Sun's surface.

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Apollo 13 special: interview with Mission Control's Jerry WoodfillThousands of people helped bring the three Apollo 13 astronauts home. Jerry Woodfill was working at Mission Control when the spacecraft's oxygen tank exploded, and was responsible for the onboard alarm system that led to the crew uttering the immortal words "Houston, we've had a problem." This episode, Jerry talks to us about what it was like...

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Epsilon EridaniEpsilon Eridani is a little smaller and less massive than the Sun, and just a third as bright.

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The Slime Mold and the UniverseHow could a lowly slime mold help researchers understand the distribution of dark matter and galaxies across the cosmos?

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Tau CetiAt least four planets orbit the star Tau Ceti, one of our closest neighbors. And two of those worlds are at the edges of the star's habitable zone - the region that's most comfortable for life.

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Astronaut Mike Massimino's "Unlikely" Journey To SpaceWhile many of us are struggling with the new normal of quarantining and self-isolating, for NASA astronauts - it's a part of the job.

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Liftoff 121: Apollo 13In the spring of 1970, NASA launched what would be the third mission to walk on the moon, but almost nothing went to plan, putting the crew in peril until the moment they splashed down.

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Episode 255: DOWNLINKShort and Sweet — Virgin Orbit selects site in Japan for horizontal launches. — NASA selects SunRISE.

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71E-83-Two Space Rocks Come Close To Planet Earth In A WeekThe NASA funded, University of Arizona, Schmidt telescope on Mt. Bigelow, AZ was used to discover two close approaching space rocks on the same night.

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AaS! 125: Does Planet Nine exist?Why do we think the solar system might have another planet? Why do we think it doesn't?

Ask a Spaceman! Shared .

Mars EquinoxMars will be moving closer to the Sun throughout the season. It'll be closest to the Sun around the start of southern summer.

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Episode 23David, Jen, Mark, Megan, and Stuart present Seldom Sirius. Episode twenty three in which we're isolated in space.

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Venus and AldebaranThe brilliant light is Venus, the "evening star." It's the brightest object in the night sky other than the Moon, so you can't miss it.

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Bright GalaxiesThe most famous member of that quartet is M51, the Whirlpool Galaxy. It actually consists of two galaxies.

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Space Policy Edition: Our Equinox Space Policy BriefingThe coronavirus pandemic reminds us that everything we do in space depends on what we do here on Earth.

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582-Stealthy AsteroidAsteroids which approach Earth from inside of our orbit about the Sun are often difficult to discover and may represent a unique threat to our home planet.

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Venus and the PleiadesTwo of the great beauties of the night sky, Venus and the Pleiades, will slide past each other the next few nights.

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Ep. 564: Mini MoonsLast month astronomers announced that they had detected a tiny asteroid that had been captured by the Earth's gravity well and had been sharing our orbit for a few years.

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Bright SubjectUntil 1845, almost no one had seen the Sun as anything other than a bright disk in the daytime sky.

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The Next 10 Years: Continuing our Solar System TourOur survey of the solar system in anticipation of the next planetary science decadal survey continues with Mars, the big outer planets, and the smaller bodies that share the neighborhood.

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Volcanic ExomoonThose details about the system are pretty well established. The moon, on the other hand, hasn't been confirmed.

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April 2020: Planets AplentyThis month's Sky Tour astronomy podcast highlights how Venus flirts with the Pleiades star cluster after sunset, then leads you to views of Jupiter, Saturn, and Mars together in the predawn sky.

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April 2020 Part 1We're hosting a live Q&A on Thurs 16th April. Go to to see how to watch and get involved!

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Episode 254: XL to The MoonSpaceflight news — Gateway Logistics Services Program awarded to SpaceX. — Dragon XL. — OIG is investigating NASA's acquisition strategy — Crew Dragon Mk 3 Parachute Test.

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Travelers-Antartic MeteoritesIn the cold deserts of Antarctica nature collects meteorites as ice sheets carrying space rocks are pushed up against mountains.

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Hardy PlanetThe planet is several times the size of the white dwarf. That makes it about as big as Uranus or Neptune, two of the giants of our own solar system.

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Science Fiction and Star Trek, with Zachary Quinto"The needs of the many outweigh the needs of the few." Neil deGrasse Tyson explores Star Trek and science fiction with Zachary Quinto , comic co-host Chuck Nice, and astrophysicist and StarTalk geek-in-chief Charles Liu, > NOTE: StarTalk+ Patrons and All-Access subscribers can watch or listen to this entire episode > Thanks to our Patrons Pat...

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Mars and SaturnThe planets Mars and Saturn don't have a lot in common. Mars is small, dense, and rocky.

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285. Dear Cheap AstronomyStumbling around in the dark again.

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ArnebIn a series of steps, the carbon fuses with hydrogen to make nitrogen, followed by a heavier form of carbon.

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Unmanned: Drone Racing and TechIs it an Esport? Is it a "real" sport? Or is it a bit of both?

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581-Planet HuntingThe hunt is on for Earth like planets which are close enough for us to study in detail.

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Wilhelm RoentgenIt's not unusual for a husband to take a picture of his wife displaying her wedding ring.

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Ep. 563: White Dwarf MergersWhite dwarfs are usually about 60% the mass of the Sun, so it was a bit of a surprise when astronomers found one that was almost exactly twice that.

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Busy BetelgeuseThe star is one of the most impressive in our part of the galaxy. It's a dozen or more times the mass of the Sun, and hundreds of times the Sun's diameter.

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Apollo 13 special: how astronauts and Mission Control averted disaster"Houston, we've had a problem". This issue we mark the 50th anniversary of Apollo 13, revealing what went wrong and how Mission Control reacted on the ground.

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The Next 10 Years…An Introduction to the Decadal SurveyPreparations at NASA are underway for creation of the next planetary science decadal survey, a roadmap intended to guide exploration of our solar neighborhood from 2023 to 2032.

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'Windy' GalaxiesNGC 4449 is small but busy. The dwarf galaxy looks like it's recently merged with a couple of other galaxies.

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