Neil deGrasse Tyson @neiltyson
@ExogenesisHH @GrimyMexican @TheProjectUnity @SteUFOnotCGULLS @jamescfox Apologies. I guess my correspondence was not clear enough: I was referencing the claims of intellgent Aliens visiting Earth in spaceships, and not whether there’s chemical evidence of Alien metabolism elsewhere in the universe. — PolitiTweet.org