AaS! 158: What’s So Groovy About Gravitational Waves? (Part 2)

Ask a Spaceman!

Paul M. Sutter

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

4.8 • 853 Ratings

🗓️ 17 August 2021

⏱️ 43 minutes

🔗️ Recording | iTunes | RSS

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Summary

Part 2 of 2! How did the observation of a kilonova change astronomy? How did that one observation kill off alternate models of gravity? What’s in store for the future of gravitational waves? I discuss these questions and more in today’s Ask a Spaceman!

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Thanks to Cathy Rinella for editing.

Hosted by Paul M. Sutter, astrophysicist and the one and only Agent to the Stars (http://www.pmsutter.com).

Transcript

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0:00.0	This episode of Aska Spaceman is brought to you by my friends at BetterHelp. Better Help provides
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0:15.2	important part of my life experience is something I'm absolutely not ashamed to talk about. I wish more people
0:23.6	use to therapists and counselors to take better care of their own mental health, just like
0:28.8	they take care of their physical health. I know a lot of you tune into this show for astrotherapy
0:36.3	as a word, but maybe if you're having a really tough time,
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0:54.5	someone who cares and knows what they're talking about. Listen, as a listener, you'll get 10% off
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1:09.3	over one million people who have taken charge of their mental
1:12.6	health again that's better help help.com slash spaceman
1:18.5	of course it was weird.
1:31.1	It had to be weird.
1:32.4	Our first ever direct observation of a black hole merger back in 2015 with the LIGO Observatory was weird.
1:43.2	It has to do with the masses of those black holes. One of them was
1:47.0	35 times the mass of the sun and the other was 30 solar masses. And combined, when they
1:53.8	merged together, they made a 60 solar mass black hole. Some of the mass went away in the form
1:59.8	of gravitational waves. Why is that weird?
2:03.1	Because we didn't think that nature liked making black holes that big. Like, how do you,
2:08.5	how do you make a black hole? You make a black hole through supernova, through giant stars dying.
	...

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