AaS! 77: Seriously, What is Gravity? (Part 1)
Ask a Spaceman!3 Apr 2018

AaS! 77: Seriously, What is Gravity? (Part 1)

Part 1! How did Einstein develop General Relativity? What does it mean for different kinds of masses to be equivalent? How does gravity do what it does? Why is curvature so important in understanding gravity? I discuss these questions and more in today's Ask a Spaceman!

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Big thanks to my top Patreon supporters this month: Robert R., Justin G., Matthew K., Kevin O., Chris C., Helge B., Tim R., Steve P., Lars H., Khaled T., Chris L., John F., Craig B., Mark R., and David B.!

Music by Jason Grady and Nick Bain. Thanks to WCBE Radio for hosting the recording session, Greg Mobius for producing, and Cathy Rinella for editing.

Hosted by Paul M. Sutter, astrophysicist at The Ohio State University, Chief Scientist at COSI Science Center, and the one and only Agent to the Stars (http://www.pmsutter.com).

Episoder(276)

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AaS! 230: Is the Universe Making Any New Galaxies?

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20 Aug 202426min

AaS! 229: Is the James Webb Breaking Cosmology?

AaS! 229: Is the James Webb Breaking Cosmology?

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6 Aug 202435min

AaS! 228: Can a Galaxy Be Destroyed?

AaS! 228: Can a Galaxy Be Destroyed?

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AaS! 227: Where is the Center of the Universe?

AaS! 227: Where is the Center of the Universe?

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2 Jul 202435min

AaS! 226: Does the Universe Get Shorter When You Go Faster?

AaS! 226: Does the Universe Get Shorter When You Go Faster?

How does length contraction work in relativity? Do moving objects really get shorter? What about from their perspective? How are we supposed to make sense of any measurement? I discuss these questions...

18 Jun 202436min

AaS! 225: What is the Cosmic Flaw That Shouldn't Exist?

AaS! 225: What is the Cosmic Flaw That Shouldn't Exist?

What is the "cold spot" on the cosmic microwave background? Why shouldn't it exist? What are some possible explanations for it, and why are they unsatisfying? I discuss these questions and more in tod...

4 Jun 202440min

AaS! 224: Can Life Survive on Locked Planets?

AaS! 224: Can Life Survive on Locked Planets?

How do planets get tidally locked? What are these systems typically like? Can life find a home in such a challenging environment? I discuss these questions and more in today's Ask a Spaceman! Support ...

21 Mai 202436min

AaS! 223: Why is it So Hard to Return to the Moon?

AaS! 223: Why is it So Hard to Return to the Moon?

If we went to the Moon already, why can't we go back so easily? What technology have we lost? What are we trying to do differently? I discuss these questions and more in today's Ask a Spaceman! Suppor...

7 Mai 202433min

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