Ask a Spaceman!

What’s going on under the ice of Europa? What keeps it so warm down there? Are the oceans pure or have the right chemistry for life? I discuss these questions and more in today’s Ask a Spaceman!

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How do we make observations beyond visible light? What exactly is a telescope? And what’s up with NASA adding colors to images? I discuss these questions and more in today’s Ask a Spaceman!

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Part 2 of What is the cosmic microwave background? What causes those bumps and wiggles? What does it tell us about the early universe, and the universe we have today? What does the universe have to d…

What is the cosmic microwave background? How was it discovered? What did it have to do with the great debate between Big Bang theory and the Steady State model? I discuss these questions and more in …

What are virtual particles? What do they have to do with waving fields around? And why can’t physicists use meaningful jargon words? I discuss these questions and more in today’s Ask a Spaceman!

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What is the so-called Great Attractor? What’s the Zone of Avoidance, and is it scary? What makes galaxies move in the first place? I discuss these questions and more in today’s Ask a Spaceman!

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What would happen if the moon disappeared tomorrow? What makes it so special in the first place? Does it really *do* anything useful? I discuss these questions and more in today’s Ask a Spaceman!

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How are nebulae formed or created? Where do they go when they’re done being nebulae? How is it linked to the formation of stars? I discuss these questions and more in today’s Ask a Spaceman!

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How can the universe expand faster than the speed of light? What does it mean for Special Relativity to be “local”? Is there a conflict between General and Special Relativity? I discuss these questio…

It’s a BONANZA, featuring a bunch of questions from second-graders! Including: Where’s the edge of the universe? How many rings does Saturn have? Are there Martians? And so much more in today’s Ask a…

Why does E=mc^2? Where does it come from? What’s the significance of that famous equation? I discuss these questions and more in today’s Ask a Spaceman!

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In this very special episode, I discuss the importance of communicating science, a cool new project I’m working on (songofthestars.org), and how arts and science can be married to reveal the beauty o…

How did Einstein develop General Relativity? What does it mean for space to be curved anyway? And just how do these gravitational waves work, anyhow? I answer these questions and more in today’s Ask …

What’s so special about Wolf-Rayet stars? Do we even know how they work? And what does this all have to do with Paris? I answer these questions and more in today’s Ask a Spaceman!

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How do we measure distances to…well, distant objects? What the heck is a Cepheid, and why is it useful? Standard candles? Standard rulers? Standard spheres? It all seems a bit much, don’t you think? …

Why doesn’t quantum mechanics agree with general relativity? Will we ever have a quantum picture of gravity? What are some candidates? What does it have to do with cuss words?

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What’s up with exoplanets? What’s the variety, and how do we detect them? How did Hot Jupiters get so hot, anyway?

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It’s a special “transient” edition! What was the Christmas Star?

Follow all the show updates at askaspaceman.com and support the show at patreon.com/pmsutter.

Keep those questions about space, scienc…

It’s a BONANZA! Featuring many questions from a live event, including: Is time travel possible? Can a galaxy eat itself? Will we ever run out of stars? And so much more!

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Are we really made of stars? How do we know? What does it mean for us? Ask a Spaceman!

Support the show: http://www.patreon.com/pmsutter All episodes: http://www.AskASpaceman.com Watch on YouTube: …