Stephen Hawking thinks that that we need to avoid contact with aliens.

Aliens may exist but mankind should avoid contact with them as the consequences could be devastating, British scientist Stephen Hawking warned Sunday. "

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 the astrophysicist in a new television series, according to British media reports.

Then again - with the way that the human race is, maybe it would be better to have aliens running the planet.

And pray that there's intelligent life somewhere out in space,

'Cause there's bugger all down here on Earth.