It’s a BONANZA, featuring a bunch of questions from second-graders! Including: Where’s the edge of the universe? How many rings does Saturn have? Are there Martians? And so much more in today’s 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.