What’s beyond our Universe? Will time travel ever be possible? And what might aliens look like? All huge questions that today we’re asking a special guest, Neil DeGrasse Tyson – astrophysicist and author of the new book To Infinity and Beyond: A Journey of Cosmic Discovery. 

In a wide-ranging conversation, DeGrasse Tyson unpacks the biggest scientific mysteries of our Universe, from whether space is really empty, to if humans are actually smart enough to make sense of the cosmos.
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