How To Misuse a Warp Drive for Time Travel

In this Cosmic Query, a fan asks about the worst-case scenario for misuse of a warp drive. Sure enough, astrophysicist Neil deGrasse Tyson comes up with one involving backwards time travel that creates a timeline-destroying paradox. Then it gets really weird, when Neil and co-host Eugene Mirman talk about altering history, killing grandparents, sex and jumping out of closets. Watch for yourself.

via Star Talk Radio.
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Neil deGrasse Tyson: When I Look Up

Neil deGrasse Tyson is an astrophysicist and the Director of the Hayden Planetarium at the American Museum of Nature History.

via NOVA’s Secret Life of Scientists and Engineers.

Could Aliens Be Made of Pure Energy?

A fan asks if an alien species could exist as pure energy, and astrophysicist Neil deGrasse Tyson explores a potential drawback to energy-based life forms. Comic co-host Eugene Mirman just wants to know if you could eat them. Enjoy this StarTalk Radio “Behind the Scenes” Cosmic Queries video.

via Star Talk Radio.

Neil deGrasse Tyson on Calculating the Distance of a Quasar

If a quasar is billions of light years away, how can we calculate that distance when the light takes billions of years to reach us? Astrophysicist Neil deGrasse Tyson explains why we can see events that took place before Earth even existed in this StarTalk Radio “Behind the Scenes” Cosmic Queries video with comic co-host Eugene Mirman.

via Star Talk Radio.