"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," says Stephen Hawking in "Stephen Hawking's Universe." a documentary film to be broadcast in May on Discovery Channel. "I imagine they might exist in massive ships, having used up all the resources from their home planet. Such advanced aliens would perhaps become nomads, looking to conquer and colonize whatever planets they can reach." That's a pleasant thought...
All may not be lost however, Professor Hawking also expects that we'll some day build space ships that will travel through time. Hopefully that happens before the alien's arrive, if they're not already here!
Source: c|net's Chris Matyszczyk - Technically Incorrect blog.
UPDATE: cartoonist proves Hawking to be wrong.
UPDATE: cartoonist proves Hawking to be wrong.