Stephen Hawking has tackled the mysteries of the universe his entire life. Now the world-renowned scientist has some new things to say about a potential alien invasion . If you recall, he warned us a couple of years ago, "If aliens visit us, the outcome could be much like when Columbus landed in America, which didn’t turn out well for the Native Americans."
"Such advanced aliens would perhaps become nomads, looking to conquer and colonize whatever planets they can reach," he said.
The physicist, who has suffered from motor neurone disease since his twenties, explained that the existence of aliens is beyond doubt. They have to exist; there is no other conclusion.
"To my mathematical brain, the numbers alone make thinking about aliens perfectly rational. The real challenge is to work out what aliens might actually be like."
He also explained that the best chances for the survival of the human race is to find a new home on another planet.
"There's an increasing risk that a disaster will destroy Earth," Prof Hawking explains."I therefore want to raise public awareness about the importance of space flight. I have learned not to look too far ahead, but to concentrate on the present. I have so much more I want to do."
In July, Britain's most famous scientist helped to launch Breakthrough Listen , a 10-year, £64million project funded by US-based Russian billionaire Yuri Milner.
Mr Milner’s team will scan the skies for alien broadcast signals, searching the entire Milky Way and 100 nearby galaxies.
Professor Hawking, 73, said at the Royal Society in London: “Somewhere in the cosmos, intelligent life may be watching these lights of ours, aware of what they mean.”
When you think about it, portions of the earth light up like a homing beacon at night. Eventually some space wanderer will be drawn to it.
Stephen Hawking Quotes
"If you are lucky enough to find love, remember it's there and don't throw it away."
"The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."
"Quiet people have the loudest minds."
"We are just an advanced breed of monkeys on a minor planet of a very average star. But we can understand the Universe. That makes us very special."
"Women. They are a complete mystery."
"Without imperfection, neither you or I would exist."
Look up at the stars, not down at your feet
"The past, like the future, is indefinite and exists only as a spectrum of possibilities."
"I believe things cannot make themselves impossible."
"The Simpsons' is the best thing on American TV."