Beware of E.T.: Stephen Hawking Famed physicist believes in aliens, but not that they come in peace By M. Morris, Newser Staff Posted Apr 26, 2010 6:20 AM CDT 96 comments Comments Physicist Stephen Hawking answers questions during an interview in Orlando, Fla., April 26, 2007. (AP Photo/John Raoux. File) (Newser) – Life almost certainly exists elsewhere in the universe, and humans on Earth should be doing everything in their power to keep away from the alien beings, Stephen Hawking says. "We only have to look at ourselves to see how intelligent life might develop into something we wouldn’t want to meet," the physicist warns in a forthcoming Discovery Channel series. "If aliens ever visit us, I think the outcome would be much as when Christopher Columbus first landed in America, which didn’t turn out very well for the Native Americans," Hawking observes, according to the Times of London.