Featuring Dr. Katie Mack, author of The End of Everything: (Astrophysically Speaking); Marc Hartzman, author of The Big Book of Mars: From Ancient Egypt to The Martian, A Deep-Space Dive into Our Obsession with the Red Planet; & Andrew Fazekas, author of National Geographic Backyard Guide to the Night Sky

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Theoretical astrophysicist, Dr. Katie Mack, is the author of The End of Everything: (Astrophysically Speaking).  Find out the possible ways that our universe comes to an end.

Marc Hartzman is the author of The Big Book of Mars: From Ancient Egypt to The Martian, A Deep-Space Dive into Our Obsession with the Red Planet.

Science writer, Andrew Fazekas, The Night Sky Guy, author of National Geographic Backyard Guide to the Night Sky, talks about the splashdown of the SpaceX capsule and the Mars mission.