Neil deGrasse Tyson explains the relatively recent phenomenon of UFO footage and if they in fact mean aliens are visiting us. We've been wondering whether we are alone in the Universe since the dawn of civilization. But it's only in recent years that this question has gotten much much more ...

How Can We Find Them? Neil deGrasse Tyson on Intelligent Alien Life Subscribe to Science Time: https://www.youtube.com/sciencetime24 Is there life outside Earth...is a question we may answer within our lifetime. Though we should remain skeptical about any claims surrounding extraterrestrial ...

What would we do as a civilization if we found evidence for intelligent alien life? How would we deal with it? Neil deGrasse Tyson explains why alien civilizations may be rare, even though life in general may be ubiquitous throughout the galaxy and beyond. Neil deGrasse Tyson also explains ...

Intragalactic Alien Civilizations With Neil deGrasse Tyson Subscribe to Science Time: https://www.youtube.com/sciencetime24 Neil deGrasse Tyson explains the possibility of alien civilizations existing in our galaxy the milky way. Many people believe we've been visited by intelligent aliens ...