AaS! 21: Are we really made of stars?

Are we really made of stars? How do we know? What does it mean for us? Ask a Spaceman!

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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.