Scientists Warn Against Contacting Alien Life ✖ Times says intelligence officials reportedly found no evidence the crafts are piloted by alien life, they also found no evidence the crafts were of this planet. Either way, the chatter has started to shine a sense of legitimacy on the discussion of unidentified crafts that appear in the sky around the world. Should they be piloted by beings not from Earth, some astrophysicists have suggested we not attempt to contact them. In a blistering new op-ed shared in the Washington Post, astrophysicist Mark Buchanan says the decision to contact extraterrestrials "could end all life on Earth."