AaS! 179: What are the Alternatives to Dark Matter?

Ask a Spaceman!

Paul M. Sutter

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

4.8 • 853 Ratings

🗓️ 5 July 2022

⏱️ 45 minutes

🔗️ Recording | iTunes | RSS

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Summary

What are some of the problems with dark matter? What about modified gravity? Are there any other solutions? 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	Before I dig into today's topic, I want to share with you a new partnership that I
0:11.6	just know you'll really enjoy. I'm excited to announce that I've started an audiobook club
0:17.3	with CHRP. Churp is an audiobook retailer known for great deals without any commitments or
0:23.2	subscription, and I've started a book club with them. I know you're always asking me for book
0:28.7	recommendations. Well, here it is, folks. At the start of every month, I'll announce the pick here
0:33.8	in CHRP. We'll deeply discount the audiobook for a limited time. We'll listen to the audiobook
0:39.4	together and then at the end of the month, you'll have a chance to share your thoughts and see
0:43.5	what other club members thought too. My first pick is Strange New World by Ray Jayawardana,
0:50.6	which I'm excited to recommend because as you already know, exoplanets are awesome.
0:55.9	We're finding planets bigger than Jupiter and smaller than Mercury. We've got super
0:59.3	Earths and mini-Neptunes. We've even got planets orbiting multiple stars at once. And somewhere
1:03.9	out there is the ultimate Holy Grail, a copy of Earth, potentially another home for life.
1:09.5	Jaya Wardana's take on this massive topic is engaging, fascinating, and fills you in
1:14.6	and all the secrets of how astronomers look beyond our solar system and what they hope to
1:19.1	find next.
1:20.3	To join, go to chirpbooks.com slash spaceman and grab my first pick, Strange New Worlds, on sale from $19 to $3.99 for a limited time.
1:33.5	I wasn't kidding about the great deals.
1:35.9	And be sure to press follow to join my club to stay in the loop on future picks and other
1:40.7	exclusive content from yours truly.
1:43.5	That's chirpbooks.com slash spaceman.
1:46.7	CHRP, C-H-I-R-P, books.com slash spaceman.
1:53.4	I get it.
	...

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