AaS! 106: How Do We Measure the Expansion of the Universe?
Ask a Spaceman!18 Jun 2019

AaS! 106: How Do We Measure the Expansion of the Universe?

What's the deal with redshift? How can we actually interpret velocities when it comes to cosmic expansion? And what's with the recent tension over measuring the expansion rate? I discuss these questions and more in today's Ask a Spaceman!

Support the show: http://www.patreon.com/pmsutter
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Keep those questions about space, science, astronomy, astrophysics, physics, and cosmology coming to #AskASpaceman for COMPLETE KNOWLEDGE OF TIME AND SPACE!

Big thanks to my top Patreon supporters this month: John, Matthew K, Helge B, Justin Z, Matt W, Justin G, Kevin O, Duncan M, Corey D, Kirk B, Barbara K, Neuterdude, Chris C, Erik M, Steve C, Digitalneo, Erik M, Tim R, Neil L, Gordon M, Joe R, Neil P, Gabriella G, Tom S, Bryan D, Irene P, Dustin R, Matt C, Iothian53, Steve P, Debra S, Ken L, Alberto M, Ron W, Chris L, Mark R, Alan B, Stephen J, David P, John F, Maureen R, Frank T, Craig B, Jesse A, Ron S, Steven L, Mark R, Ulfert B, Dave L, Stace J, S Stark, Richard K, Vladimir Z, Carol S, Stephen M, Grace M, Jeremy K, Russell W, Thomas S, David B, Tamara F, Robert B, Fr Bruce W, Catherine R, Nicolai B, Sean M, Nate H, and Edward K!

Music by Jason Grady and Nick Bain. Thanks to Cathy Rinella for editing.

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

Episoder(274)

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AaS! 124: Why Is the Speed of Light the Way It Is?

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How to Die in Space: Sneak Preview

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AaS! 122: Is String Theory Worth It? (Part 8: An Armageddon of Strings)

AaS! 122: Is String Theory Worth It? (Part 8: An Armageddon of Strings)

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18 Feb 202048min

AaS! 121: Is String Theory Worth It? (Part 7: A Correspondence from a Dear Friend)

AaS! 121: Is String Theory Worth It? (Part 7: A Correspondence from a Dear Friend)

How did String Theory get started? What has made the idea so popular over the decades? Can we ever truly have a theory of quantum gravity? What is supersymmetry, the landscape, and the AdS/CFT Corresp...

4 Feb 202030min

AaS! 120: Is String Theory Worth It? (Part 6: We Should Probably Test This)

AaS! 120: Is String Theory Worth It? (Part 6: We Should Probably Test This)

How did String Theory get started? What has made the idea so popular over the decades? Can we ever truly have a theory of quantum gravity? What is supersymmetry, the landscape, and the AdS/CFT Corresp...

21 Jan 202032min

AaS! 119: Is String Theory Worth It? (Part 5: Duality of the Fates)

AaS! 119: Is String Theory Worth It? (Part 5: Duality of the Fates)

How did String Theory get started? What has made the idea so popular over the decades? Can we ever truly have a theory of quantum gravity? What is supersymmetry, the landscape, and the AdS/CFT Corresp...

7 Jan 202035min

AaS! 118: Is String Theory Worth It? (Part 4: What We Need is a Superhero)

AaS! 118: Is String Theory Worth It? (Part 4: What We Need is a Superhero)

How did String Theory get started? What has made the idea so popular over the decades? Can we ever truly have a theory of quantum gravity? What is supersymmetry, the landscape, and the AdS/CFT Corresp...

17 Des 201942min

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