Answering Questions About Time Travel, Solar Sailing & Galaxy Collisions
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What would a four-dimensional being see if it looked at us? In this episode, Neil deGrasse Tyson and Chuck Nice answer fan questions covering higher-dimensional surgery, space elevators, alien intelligence, and colliding galaxies. Could spacetime itself be a cosmic crystal? Could 2D creatures exist, and if so, how would we even know? If 4D beings turned sideways, would we disappear like cartoon characters? We wonder whether we could make 4D surgeons do our operations for us.
Courtesy of StarTalk on YouTube. Watch on YouTube ↗
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