MyEpisodeCalendar.com - SciShow Space Episode Summaries

SciShow Space

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First Aired: April 1st, 2014

Network: YouTube

Summary: Every Tuesday and Friday, SciShow Space explores the universe a few minutes at a time. Hosts Hank Green, Caitlin Hofmeister, and Reid Reimers share everything from just after the beginning of time to the most recent breaking news in space exploration.

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Season 2018

Episode 1: How the US Launched Its First Satellite

Air Date: January 3rd, 2018

Summary: 60 years ago, in January 1958, the United States launched its first satellite, Explorer 1.

Episode 2: A New, Bubbly Origin Story for the Solar System

Air Date: January 6th, 2018

Summary: We might be closer to figuring out how our solar system was born and NASA has two finalists for its next New Frontiers mission.

Episode 3: Fighting the Loneliness of Space Travel

Air Date: January 10th, 2018

Summary: Long months or years spent in space can be isolating, making astronauts susceptible to boredom and depression. Here's a look at some long-term studies we've done here on Earth to figure out what isolation does to people, and how to make it a little more tolerable.

Episode 4: Fast Radio Bursts - Mystery Solved?

Air Date: January 13rd, 2018

Summary: Our favorite fast radio burst, FRB 121102, brings us one step closer to understanding its source, and astronomers have a new theoretical upper limit for star masses.

Episode 5: Could Naked Singularities Exist?

Air Date: January 17th, 2018

Summary: A naked singularity is something that should be a black hole, but it’s neither black nor a hole. If they exist, they’ll rewrite physics as we know it.

Episode 6: There's Clean (Frozen) Water on Mars!

Air Date: January 20th, 2018

Summary: According to two new papers, Mars may have gigantic drinkable glaciers and we might have found the reason that galaxies glow.

Episode 7: 3 Times We Thought We Found Aliens

Air Date: January 24th, 2018

Summary: Earthlings have been searching for alien life for centuries, and more than a few times we were confident that we'd found evidence, but to err is human after all.

Episode 8: We're Turning Pulsars into Galactic GPS!

Air Date: January 27th, 2018

Summary: Scientists have thought for awhile that pulsars could be used as a sort of galactic positioning system, and astronomers have published the most advanced topographical map of Titan to date!

Episode 9: How Many Galaxies Are There?

Air Date: January 31st, 2018

Summary: We've been trying to count the galaxies in the universe since the mid '90s, but our estimates change as our tools improve. So what does our current estimate really mean?

Episode 10: Earth Has a New, Orbiting Disco Ball!

Air Date: February 3rd, 2018

Summary: Earth has some new orbiters, and while one of them is vexing many scientists, another will help us learn more about our atmosphere.

Episode 11: A New Way to Move Tiny Spacecraft | Electrospray Propulsion

Air Date: February 7th, 2018

Summary: Big, fiery rocket launches are just too powerful for something like a toaster-sized CubeSat once it’s in space. Electrospray propulsion is a promising new way to move these little satellites.

Episode 12: How SpaceX Launched the World's Most Powerful Rocket

Air Date: February 10th, 2018

Summary: We've found the first evidence of planets outside of the Milky Way, and SpaceX has finally launched the Falcon Heavy rocket into space!

Episode 13: Could We Give Mars a Magnetic Field?

Air Date: February 14th, 2018

Summary: One way to help us live on Mars would be to terraform the planet. Some scientists think we might be able to do that by giving it a new magnetic field!

Episode 14: How a Frozen Earth Gave the Moon Its Shape

Air Date: February 17th, 2018

Summary: It might look like a perfect circle, but the Moon is actually wider than it is tall. Now, new calculations indicate that the Moon’s shape is a remnant of a time when Earth might’ve been covered in a single, global ice sheet.

Episode 15: How Do We Know the Age of the Universe?

Air Date: February 21st, 2018

Summary: What kinds of tools do astronomers use to calculate the age of the universe, and how can they determine the speed of its expansion?

Episode 16: How We Solved the Mystery of Pulsating Auroras

Air Date: February 24th, 2018

Summary: Astronomers have finally observed what causes pulsating auroras, and our estimates of the mass of the Andromeda Galaxy have shrunk.

Episode 17: How the First Stars Transformed the Universe

Air Date: February 28th, 2018

Summary: The first stars turned all the neutral hydrogen in the universe back into ions, created a bunch of new elements, and just generally made a mess. But without them, you wouldn’t be here.

Episode 18: It's Official - Life Could Survive on Enceladus

Air Date: March 3rd, 2018

Summary: Enceladus’ environment could totally be habitable for at least one real-world microbe and we just found the oldest supernova.

Episode 19: Why Mars Rovers Don't Study Water

Air Date: March 7th, 2018

Summary: Rovers like Curiosity search for life on Mars using rock and soil samples, but why don't they examine liquid or frozen water?

Episode 20: New Jupiter Discoveries from the Juno Mission!

Air Date: March 10th, 2018

Summary: The Juno spacecraft has been making close flybys of Jupiter and its measurements have revealed some new things about Jupiter’s interior. And astronomers were surprised after putting together the most complete atmospheric profile that’s currently possible for a “hot Saturn” 700 light years away!

Episode 21: What Happens to Your Body If You Die on Mars?

Air Date: March 14th, 2018

Summary: It's not the happiest subject, but when someone dies in space, or on another planet, what will happen to the body?

Episode 22: We Found Superconductors in Meteorites!

Air Date: March 17th, 2018

Summary: We've found the first confirmed superconductors in meteorites, and our simulated atmosphere game is really heating up!

Episode 23: Thrusters That Eat Teflon! | Pulsed Plasma Thrusters

Air Date: March 21st, 2018

Summary: Pulsed plasma thrusters use the same stuff that’s on your frying pan to make spacecraft zoom around the universe. And they’ve been doing it since the 1960s.

Episode 24: Celebrating Stephen Hawking's Most Famous Discoveries

Air Date: March 24th, 2018

Summary: Last week we lost legendary scientist Stephen Hawking. To honor of one of the greatest legacies in cosmology, we wanted to celebrate and unpack some of his most famous findings.

Episode 25: Space Guns Don't Work (But We Built One Anyway)

Air Date: March 28th, 2018

Summary: Before we had rockets like the Falcon 9, we had other ideas of how we might shoot for the moon - space guns!

Episode 26: We Just Found a Galaxy with Almost No Dark Matter

Air Date: March 31st, 2018

Summary: Scientists have found a galaxy with almost no dark matter and we have finally solved the Leading Arm mystery!

Episode 27: Neutron Stars Just Keep Getting Weirder

Air Date: April 4th, 2018

Summary: Neutron stars are some of the strangest things in the universe, but are they the source of the mysterious Fast Radio Bursts? Or is it aliens? Spoilers - probably not aliens.

Episode 28: Meet Icarus - The Farthest Star We've Ever Seen

Air Date: April 7th, 2018

Summary: We’ve seen a distant star from another galaxy far, far away, and the Milky Way is growing, thanks to baby stars born in the outer edge of our galaxy’s disk.

Episode 29: 3 Unique Rovers for Extreme Worlds

Air Date: April 11st, 2018

Summary: Specialized rovers provide all kinds of creative solutions to the problem of navigating new terrain, and future missions might just carry some weird bots like these.

Episode 30: There Are Planet-Sized Tornadoes on the Sun?!

Air Date: April 14th, 2018

Summary: Solar tornadoes are not tornadoes, and scientists are studying a black hole with a telescope bigger than the earth!

Episode 31: What We Learned by Putting Cars on the Moon

Air Date: April 18th, 2018

Summary: To expand their range on visits to the moon, astronauts needed a way to travel faster, go farther, and carry more than walking provided. Thankfully, they had the Lunar Roving Vehicle.

Episode 32: NASA Just Launched a New Planet-Hunting Telescope!

Air Date: April 21st, 2018

Summary: From launching a new satellite, to finding diamonds from a lost world, researchers have been hard at work transforming how we think about our planet, the solar system, and the rest of the universe.

Episode 33: What's It Like at the Edge of the Solar System?

Air Date: April 25th, 2018

Summary: Where does our solar system end, and interstellar space begin, and what is it like there? Satellites and probes like IBEX and Voyager 1 & 2 help us get a better look at our special corner of the galaxy.

Episode 34: A New Origin Story for Mars' Moons

Air Date: April 28th, 2018

Summary: New research is changing our ideas about the history of Mars's moons and we might have found the most active region of space.

Episode 35: Fermi Bubbles - Our Galaxy's Giant, Gamma Ray Mystery

Air Date: May 2nd, 2018

Summary: Fermi bubbles are made up of gamma rays, but where they came from is still up for debate. Did they come from a star-forming region, or the black hole at the middle of our galaxy?

Episode 36: The InSight Lander Is Going to Mars! Here's Why -

Air Date: May 5th, 2018

Summary: The InSight lander is finally launching and headed to Mars, and Hubble has revealed some hot supernova info.

Episode 37: What If the Universe Was Shaped Like a Donut?

Air Date: May 9th, 2018

Summary: The universe could be a donut in a fourth spatial dimension. Which would mean that we could potentially see our own galaxy repeated from the past... Our 3D brains aren't ready for this.

Episode 38: Is There Really An Infinite Multiverse? | Stephen Hawking's Last Paper

Air Date: May 12nd, 2018

Episode 39: 3 Things We Still Don't Understand About the Milky Way

Air Date: May 16th, 2018

Summary: We have been studying our home galaxy for years, but even though astronomy has come a long way, there is still a lot we don't know about the Milky Way.

Episode 40: We Detected Water Plumes on Europa... 20 Year Ago

Air Date: May 19th, 2018

Summary: Researchers found surprising new evidence hiding in data captured back in 1997, and we've discovered stars forming in a distant galaxy as early as 250 million years after the Big Bang.

Episode 41: Why Does the Moon Look Bigger on the Horizon?

Air Date: May 23rd, 2018

Summary: The full moon might seem bigger on the horizon than when it's higher up, but when does it actually take up more space in the sky?

Episode 42: There's an Interstellar Asteroid Hiding Near Jupiter

Air Date: May 26th, 2018

Summary: We may have found another interstellar asteroid and scientists have some new ideas about how Saturn's moons got their weird shapes.

Episode 43: The First Exoplanets Were Found Around... a Pulsar?

Air Date: May 30th, 2018

Summary: The first time scientists found exoplanets, they were orbiting something very different from our sun - a pulsar.

Episode 44: Why Pluto Might Be a Billion Comets

Air Date: June 2nd, 2018

Summary: Astronomers are trying to answer the question of how Pluto formed, and we have more evidence for the existence of Planet Nine!

Episode 45: Project Daedalus - Our 1970s Plan for Interstellar Travel

Air Date: June 6th, 2018

Summary: Many ideas have come and gone, but Project Daedalus was a uniquely ambitious plan from the 1970s that never quite came to be.

Episode 46: Earth Used to Have 19-Hour Days (and Pluto Has Dunes!)

Air Date: June 9th, 2018

Summary: According to a new model, days on Earth used to really fly by, and today Pluto has wind-swept dunes made of very weird sand.

Episode 47: How Can the Universe Be Flat?

Air Date: June 13rd, 2018

Summary: Can geometry predict the future? Cosmologists think the overall curvature of universe can tell us secrets about how it will eventually end.

Episode 48: Curiosity Found Organic Molecules on Mars! Now What?

Air Date: June 16th, 2018

Summary: Last week, NASA released some pretty cool Mars news - Curiosity found even more evidence to indicate the planet could’ve been habitable billions of years ago.

Episode 49: We Don't Actually Know Where the Sun Came From

Air Date: June 20th, 2018

Summary: We can’t find evidence of the Sun’s family, or how it might have formed, but we do have some pretty good theories.

Episode 50: Will the Opportunity Rover Survive This Dust Storm?

Air Date: June 23rd, 2018

Summary: The global dust storm on Mars is threatening the Opportunity rover and the wind on Venus might be changing the length of its days.

Episode 51: Move Over, Mars - We Could Farm on Asteroids!

Air Date: June 27th, 2018

Summary: When people live throughout the solar system, we'll need some way to feed them that doesn't involve constant shipments of Earth-grown food. Will the asteroid belt be our new cosmic food court?

Episode 52: We May Have Just Found the Universe's Missing Baryonic Matter

Air Date: June 30th, 2018

Summary: Astronomers have finally found evidence to help solve the missing baryon problem, and they're pointing telescopes toward the Intergalactic Medium to figure it out.

Episode 53: 3 Weird Stars You Can See with the Naked Eye

Air Date: July 4th, 2018

Summary: These three stars can easily be seen with the naked eye, but it took some fancy telescopes for us to realize how weird they really are!

Episode 54: We Just Took the First Image of a Baby Planet!

Air Date: July 7th, 2018

Summary: SPHERE took a photo of a baby planet and the origin of the asteroid belt may be less mysterious than we thought.

Episode 55: How Much Does the Sun Affect Earth's Climate?

Air Date: July 11st, 2018

Summary: The sun is obviously a big factor in the earth's weather, but changes in the solar cycle don't always affect our climate in straightforward ways.

Episode 56: Meet the Milky Way's Last Big Meal - The Sausage Galaxy

Air Date: July 14th, 2018

Summary: Our Milky Way Galaxy once dined on the Sausage Galaxy, and Jupiter's auroras seem to be heavily influenced by one of its moons. It's a galaxy-eat-galaxy kind of universe out there!

Episode 57: Why Does Venus Spin Backwards?

Air Date: July 18th, 2018

Summary: We're always learning more about far away galaxies and exoplanets, but we still have some pretty big mysteries hanging out here in the solar system, like why Venus spins the way it does.

Episode 58: Why Scientists Tracked One Neutrino Across the Universe

Air Date: July 21st, 2018

Summary: Last week scientists announced that they’ve likely identified the very first astrophysical source of high-energy neutrinos.

Episode 59: Why Was Mars's Underground Lake So Hard to Find? | Breaking News!

Air Date: July 26th, 2018

Summary: Researchers have discovered an underground, liquid water lake on Mars! What might it be like, and why did it take us so long to find it?

Episode 60: The Hunt for the First Neutrinos in the Universe | Cosmic Neutrino Background

Air Date: July 28th, 2018

Summary: The Cosmic Microwave Background shows us the oldest light in the universe, but to really understand the early universe we need something even older - The Cosmic Neutrino Background.

Episode 61: This Star Might Be Hiding Undiscovered Elements | Przybylski’s Star

Air Date: August 1st, 2018

Summary: Przybylski’s Star has been puzzling astronomers for decades, and it might contain elements or isotopes that scientists have never seen before!

Episode 62: The Moon May Have Once Been Habitable!

Air Date: August 4th, 2018

Summary: It's possible that the moon might have been able to support life billions of years ago, and scientists are using meteorites to learn about the history of our sun.

Episode 63: Why Is Neptune So Blue? And 3 Other Mysteries an Orbiter Could Solve

Air Date: August 8th, 2018

Summary: Neptune's radius is almost four times larger than Earth's, its surface has super intense storms, and we barely know anything else about it. It is time to send another orbiter out there.

Episode 64: Spotted - The First Inside-Out Planetary Nebula | SciShow News

Air Date: August 11st, 2018

Summary: An inside out planetary nebula has given astronomers insight into what might happen in our own solar system someday, and it's that time of year again to search for shooting stars.

Episode 65: The Deep Space Network - A Communication Hub That Also Does Science!

Air Date: August 15th, 2018

Summary: The Deep Space Network is a special network of radio dishes for tracking and talking to spacecraft, and it contributes some cool scientific observations of its own too.

Episode 66: We're Heading to the Sun! | SciShow News

Air Date: August 18th, 2018

Summary: On Aug. 12, 2018 the Parker Solar Probe started its journey to the sun and New Horizons is looking at a mysterious glow at the edge of the solar system.

Episode 67: Red Nugget Galaxies - The Universe's Ultimate Survivors

Air Date: August 22nd, 2018

Summary: Finding a red nugget galaxy is like discovering a time capsule from the early universe.

Episode 68: Solving Mysteries with the Ancient Galaxies Next Door | SciShow News

Air Date: August 25th, 2018

Summary: Some of the oldest galaxies we’ve ever seen are small, faint satellite galaxies orbiting the Milky Way, and they're providing us with a glimpse of how the universe evolved.

Episode 69: Why We've Only Ever Seen the Sun's Poles Once

Air Date: August 29th, 2018

Summary: The Ulysses mission revolutionized our understanding of the sun, but it's been the only orbiter to take this kind of out-of-ecliptic journey. Will an upcoming mission give us even more?

Episode 70: A New Kind of Northern Light | SciShow News

Air Date: September 1st, 2018

Summary: A glowing, purple ribbon of light named STEVE is weirder than we thought and we now have evidence that there is water ice on the moon!

Episode 71: The Strange Case of the Hypatia Stone

Air Date: September 5th, 2018

Summary: The Hypatia stone is one of the weirdest rocks on the planet. It's not just out of this world, it might be out of this solar system!

Episode 72: New Evidence of Water on Jupiter! | SciShow News

Air Date: September 8th, 2018

Summary: We’ve got some new evidence for water beneath Jupiter’s Great Red Spot, and a new model of Jupiter’s weird magnetic field.

Episode 73: The Oldest Planet Ever Discovered

Air Date: September 12nd, 2018

Summary: We've only found one planet in a globular cluster, where gravitational interactions should usually rip baby planets apart, but that's not all that excites astronomers about PSR 1620-26 b.

Episode 74: The Milky Way May Have a Disk of Black Holes

Air Date: September 15th, 2018

Summary: Computer models are helping scientists on the hunt for small black holes and new data is giving us a better understanding of the universe’s largest explosions.

Episode 75: To Study the Universe, This Town Still Bans Cell Phones

Air Date: September 10th, 2018

Summary: Part of being very far away from the rest of the universe is that the signals are very faint, so sometimes you need a nice, quiet spot to listen from.

Episode 76: Found - Dozens of Ancient Cryovolcanoes on Ceres!

Air Date: September 22nd, 2018

Summary: Scientists may have discovered up to 31 more cryovolcano remnants on Ceres, and the Iridium flares are slowly being allowed to burn up in our atmosphere, so see them while you still can!

Episode 77: The Sorry State of Dark Matter Alternatives

Air Date: September 26th, 2018

Summary: Scientists can’t directly observe dark matter, and they still don’t know what it is… so why are they so confident it exists?

Episode 78: Nuclear Pasta May Be the Strongest Material Ever

Air Date: September 29th, 2018

Summary: There is some super weird, noodley stuff inside neutron stars and scientists have found evidence that black holes can have strange geometries.

Episode 79: The 100-Year Mystery of the Diffuse Interstellar Bands

Air Date: October 3rd, 2018

Summary: Diffuse interstellar bands were first discovered in 1919 and since then scientists have found nearly 500 of them. How many do we understand? Only one.

Episode 80: New Evidence for Planet 9!

Air Date: October 6th, 2018

Summary: Astronomers have found more evidence for Planet 9, but another study has added another problem to our list of space travel problems.

Episode 81: What Knocked Over Uranus? And Two Other Mysteries

Air Date: October 10th, 2018

Summary: The most common type of exoplanets might be worlds like our ice giant, Uranus. Understanding it could be key to the history of planets all over the galaxy.

Episode 82: We May Have Found the First Exomoon!

Air Date: October 13rd, 2018

Summary: We’ve discovered what appears to be the first known moon outside of the solar system and new models of Europa’s surface predict the presence of ice blades!

Episode 83: Take a Ride on the Interplanetary Superhighway

Air Date: October 17th, 2018

Summary: Normal interplanetary travel uses lots of fuel, but taking advantage of some quirks of gravity can let us travel between planets using hardly any fuel at all.

Episode 84: 3 Space Mission Problems in a Week

Air Date: October 20th, 2018

Summary: It's been a tough week for space missions, from a failed Soyuz launch to two emergency shutdowns of space-based telescopes.

Episode 85: How We Accidentally Discovered Gamma-Ray Bursts

Air Date: October 24th, 2018

Summary: Gamma-ray bursts are one of the biggest mysteries in modern astronomy, but the mystery began on accident, thanks to the Cold War!

Episode 86: Could Complex Life Survive on Mars?

Air Date: October 27th, 2018

Summary: The water on Mars probably doesn't have much oxygen, but new models show that life doesn't need as much O2 as we thought. And NASA is sending a claw machine to the red planet!

Episode 87: Why Venus Could Doom 'Habitable' Exoplanets

Air Date: October 31st, 2018

Summary: There are exoplanets out there that seem very Earth-like, but if you look out and see liquid metal instead of liquid water, you might be in the Venus zone.

Episode 88: Buzzed By a Weird Blue Asteroid

Air Date: November 3rd, 2018

Summary: Asteroid 3200 Phaethon got closer than it will be until 2093, and the reflecting light has astronomers puzzled, and the relationship between black holes and magnetic fields is now a little more clear.

Episode 89: Do Exoplanets Have Rings?

Air Date: November 7th, 2018

Summary: Exorings are pretty elusive, but we’ve already found what might be the first set of exorings, and if we find more, we’ll have a treasure trove of new information.

Episode 90: What We Learned from the Kepler Space Telescope

Air Date: November 10th, 2018

Summary: October was bittersweet for space scientists as we said goodbye to both the Kepler Space Telescope and Dawn mission.

Episode 91: How Going to Space Changes the Way You Think Forever

Air Date: November 14th, 2018

Summary: A trip into space produces physiological effects in human beings, but it can also change a person in a profound, psychological way.

Episode 92: The Mysterious Ridges Near Pluto's Heart

Air Date: November 17th, 2018

Summary: Astronomers may have figured out some cool geology on Pluto, and Barnard's star is back in the running for having a planet!

Episode 93: 3 of the Universe's Most Extreme Galaxies

Air Date: November 21st, 2018

Summary: With so many galaxies in the universe, some are bound to astound us. Here are three of the most extreme galaxies scientists have discovered so far.

Episode 94: This New Star Is a Ticking Time Bomb

Air Date: November 24th, 2018

Summary: We might be sitting next to the largest bomb in the galaxy and NASA's InSight lander will touch down on Mars this Monday!

Episode 95: 3 of the Strangest Mountains in the Solar System

Air Date: November 28th, 2018

Summary: Our planet shares a lot with other rocky planets in our solar system, but astronomers have found a few mountains out there that are nothing like ours.

Episode 96: InSight Landed on Mars! What's Next?

Air Date: December 1st, 2018

Summary: InSight has safely landed on Mars, and astronomers have some improved theories about the TRAPPIST-1 system.

Episode 97: The Milky Way Is Missing Satellite Galaxies

Air Date: December 5th, 2018

Summary: There’s a big difference between the number of satellites that simulations predict, and the number we’ve actually seen with telescopes, but why?

Episode 98: NASA Just Arrived at an Asteroid!

Air Date: December 8th, 2018

Summary: OSIRIS-REx finally entered orbit around the asteroid Bennu this week and new research has found an old recipe for RNA.

Episode 99: 3 Ways We Could Get Clean Energy from the Moon

Air Date: December 12nd, 2018

Summary: There are renewable energy sources here on Earth, but to meet our clean energy needs we should consider every possible option, including the Moon.

Episode 100: No, We Did Not Just Solve Dark Matter and Dark Energy

Air Date: December 15th, 2018

Summary: A paper published last week proposed a hypothesis that identified 95% of the missing stuff in the universe, but the headlines have been a little over-hyped.

Episode 101: Why It's So Hard to Land on Mars

Air Date: December 19th, 2018

Summary: We’ve sent more spacecraft to Mars than any other planet, but around half of the probes that have ever attempted to explore Mars have either crashed or disappeared.

Episode 102: Get Ready - New Horizons Is Approaching Its Next Target

Air Date: December 22nd, 2018

Summary: New Horizons is on its way to Ultima Thule, the most distant object a spacecraft has ever visited. And scientists have created the sugar component of DNA under extraterrestrial conditions.

Episode 103: Everything You Need to Know About Living on Mars

Air Date: December 26th, 2018

Summary: Scientists are constantly researching different ways people could potentially live on Mars. Start making your future Martian travel plans with this collection of videos about the unique challenges of putting humans on Mars.

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