AaS! 77: Seriously, what is gravity? (Part 1)

Ask a Spaceman!

Paul M. Sutter

Astrophysics, Science, Cosmos, Holes, Black, Astronomy, Natural Sciences, Universe, Cosmology, Space, Physics

4.8 • 853 Ratings

🗓️ 3 April 2018

⏱️ 39 minutes

🔗️ Recording | iTunes | RSS

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Summary

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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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).

Transcript

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0:00.0	So let's say you got a new job with, I don't know, let's call it Evil Genius Corp for purposes of illustration.
0:14.5	And it's your first day.
0:16.6	And you're so excited.
0:17.7	You're super nervous.
0:18.9	And you have a routine.
0:20.2	Like you have exactly the same
0:23.1	routine every single morning. The alarm goes off. You hit it. The alarm goes off again. You hit it again.
0:28.2	Then finally you get it up. You take a shower. You brush your teeth. You, you dress yourself. You get
0:34.2	your coffee going. You eat breakfast. You open open up the door you get in the car and you
0:38.7	drive off you do whatever and your first day totally normal you know you got your excess keys
0:44.9	you got your computer you put a picture up in your cubicle you're happy you finally have a job
0:51.2	and it doesn't matter if it's with evil genius corp and then the next day
0:54.9	rolls around and the exact same routine you get out of bed you take a shower you brush your
1:01.7	teeth you make your cup of coffee you're a little bit nervous you spill the coffee and it splashes down
1:06.1	on the floor and you waste a little bit of time having to clean it up and then you make a fresh
1:10.2	pot of coffee and then you eat some breakfast and then you make a fresh pot of coffee, and then you eat some breakfast,
1:12.1	and then you open up the door, and instead of your front yard that you're used to,
1:17.3	it's the pure vacuum of space.
1:19.4	It turns out your room, your entire house,
1:23.8	has been attached to an evil genius corp rocket
1:27.2	that is currently blasting its way through
1:30.0	the furthestmost distances of the solar system.
	...

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