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Alien Sightings with David Spergel
Episode S15 · Ep 73 December 17, 2024 56 min 24s

Alien Sightings with David Spergel

From StarTalk Radio • Neil deGrasse Tyson
Are alien spacecraft here on Earth? Neil deGrasse Tyson and comedian Chuck Nice discuss the UAP hearings, unexplained cosmic phenomena, dark matter, and more with astrophysicist and NASA UAP chair David Spergel.

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