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Ask a Spaceman!
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AaS! 25: How Do We Know How Far Away Stuff Is...Far Away?

37 min•2 februari 2016

How do we measure distances to…well, distant objects? What the heck is a Cepheid, and why is it useful? Standard candles? Standard rulers? Standard spheres? It all seems a bit much, don't you think? I answer these questions and more in today's Ask a Spaceman!

Support the show: http://www.patreon.com/pmsutter
All episodes: http://www.AskASpaceman.com
Watch on YouTube: http://www.youtube.com/PaulMSutter
Read a book: https://www.pmsutter.com/books 

Keep those questions about space, science, astronomy, astrophysics, and cosmology coming to #AskASpaceman on Twitter@PaulMattSutter and Facebook/PaulMattSutter for COMPLETE KNOWLEDGE OF TIME AND SPACE! Music by Jason Grady and Nick Bain.

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AaS! 269: Why Are Interstellar Objects So Weird?
•27 min
AaS! 268: What are Little Red Dots?
•32 min
AaS! 267: Is the Universe Older than We Think?
•28 min
AaS! 266: Is the Universe Made of Math?
•31 min
AaS! 265: Does Antimatter Fall Up?
•28 min
AaS! 264: Just How Weird is the Quantum Eraser?
•30 min
AaS! 263: Does Free Will Exist?
•30 min
AaS! 262: Does the Universe Have Extra Dimensions?
•33 min
AaS! 261: What are Black Dwarfs?
•37 min
AaS! 260: What's the Big Deal with the Weak Force?
•31 min

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