2015x1 - What Planet is Super Mario World?

February 11, 2015

We've run, jumped, and stomped all over the world of Super Mario, but, where in the universe is Super Mario EXACTLY? It's virtual so it obviously DOESN'T exist, but if it did, could Super Mario world be in our solar system? And what do the planet's dynamics reveal about Mario's crazy jumping ability? Join Gabe as he takes us on a rick-roaring tour of our known universe as we search for the answer in this week's SpaceTime!

2015x2 - Is It Irrational to Believe in Aliens?

February 18, 2015

2015x3 - How Do You Measure the Size of the Universe?

February 25, 2015

2015x4 - Should We Colonize Venus Instead of Mars?

March 4, 2015

2015x5 - What Will Destroy Planet Earth?

March 11, 2015

2015x6 - Can A Starfox Barrel Roll Work In Space?

March 18, 2015

2015x7 - Cosmic Microwave Background Explained

March 25, 2015

2015x8 - Is the Moon in Majora’s Mask a Black Hole?

April 1, 2015

2015x9 - Could You Fart Your Way to the Moon?

April 8, 2015

2015x10 - How to Weigh a Fart

April 9, 2015

2015x11 - Could NASA Start the Zombie Apocalypse?

April 15, 2015

2015x12 - Are Space and Time An Illusion?

April 22, 2015

2015x13 - What's the Most Realistic Artificial Gravity in Sci-Fi?

April 29, 2015

2015x14 - Should the First Mars Mission Be All Women?

May 6, 2015

2015x15 - 9 NASA Technologies Shaping YOUR Future

May 13, 2015

2015x16 - The Real Meaning of E=mc²

May 20, 2015

2015x17 - Habitable Exoplanets Debunked!

May 27, 2015

2015x18 - Is Gravity An Illusion?

June 3, 2015

2015x19 - Challenge: What Happens to a Helium Balloon in Freefall?

June 10, 2015

2015x20 - How to Signal Aliens

June 17, 2015

2015x21 - The Calendar, Australia & White Christmas

June 24, 2015

2015x22 - Can a Circle Be a Straight Line?

July 2, 2015

2015x23 - Curvature Demonstrated + Comments

July 8, 2015

2015x24 - The Leap Second Explained

July 8, 2015

2015x25 - Can You Trust Your Eyes in Spacetime?

July 15, 2015

Last time we talked about what curvature means, looked at geodesics, great circles on spheres, and tried to understand the notion of "straightness". This week on Spacetime, we take a detour into how geometry works in spacetime. Get excited, because this episode is even more mind-bending than the last!

2015x26 - SPECIAL ANNOUNCEMENT + Flat Spacetime Geometry Comments

July 22, 2015

2015x27 - General Relativity & Curved Spacetime Explained!

July 29, 2015

2015x28 - What Physics Teachers Get Wrong About Tides!

August 5, 2015

We all know tides have something to do with gravity from the Moon and Sun, but if gravity affects the motion of all objects equally, then how come oceans have large tides while other bodies of water don't? It's because your mental picture of the tides is probably WRONG!!! Join Gabe on this week’s episode of PBS Space Time as he sets the record straight on tidal force, gravitational differential and what role the moon actually plays in tides. Why don't lakes have tides? Watch the episode to find out!

2015x29 - Challenge: Which Particle Wins This Race?

August 12, 2015

2015x30 - Do Events Inside Black Holes Happen?

August 19, 2015

2015x31 - Watch THIS! (New Host + Challenge Winners)

August 27, 2015

2015x32 - Does Dark Matter BREAK Physics?

September 23, 2015

2015x33 - What Happens At The Edge Of The Universe?

September 30, 2015

Lots of people believe the Universe is infinite, but there's a good possibility that might not be the case. Which means that there would be an actual edge of the Universe. What happens at that edge? Is there a restaurant? Join Matt on this week’s episode of Space Time as he explores the greatest expanses of our Universe. So what do you find when you reach the edge? More Universe? Bubble Universes? Back where you started?! Check out this episode of Space Time to find out!

2015x34 - The Speed of Light is NOT About Light

October 7, 2015

2015x35 - 5 REAL Possibilities for Interstellar Travel

October 15, 2015

2015x36 - Have Gravitational Waves Been Discovered?!?

October 22, 2015

2015x37 - Is The Alcubierre Warp Drive Possible?

October 28, 2015

2015x38 - Why Haven't We Found Alien Life?

November 5, 2015

2015x39 - Challenge: Can you save Earth from a Killer Asteroid?

November 11, 2015

2015x40 - 5 Ways to Stop a Killer Asteroid

November 18, 2015

2015x41 - 100 Years of Relativity + Challenge Winners!

November 25, 2015

2015x42 - How to Build a Black Hole

December 9, 2015

2015x43 - The Higgs Mechanism Explained

December 16, 2015