Stephen Hawking British Scientist Says Mankind Should Stay Away From Aliens

The British Scientist Stephen Hawking warned the mankind that aliens may actually exist and we should not have contact with them. The consequences would be catastrophic. "If aliens visit us, the outcome would be much as when Columbus landed in America, which didn't turn out well for the Native Americans." Said Hawking in a new TV series on the Discovery Channel called "Into the Universe with Stephen Hawking."