Are They Here? with NASA UAP Chair, David Spergel

StarTalk Radio - A podcast by Neil deGrasse Tyson

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Are the UAP sightings aliens here on Earth? Neil deGrasse Tyson and comedian co-host Paul Mecurio discuss the congressional hearings on unidentified anomalous phenomena (UAP) with astrophysicist and chair of NASA’s UAP independent study team, David Spergel.