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.