British astrophysicist Stephen Hawking says aliens are out there, but it could be too dangerous for humans to interact with extraterrestrial life. Hawking claims in a new documentary that intelligent alien lifeforms almost certainly exist, but warns that communicating with them could be "too risky."
The 68-year-old scientist says a visit by extraterrestrials to Earth would be like Christopher Columbus arriving in the Americas, "which didn't turn out very well for the Native Americans."
He speculates most extraterrestrial life will be similar to microbes, or small animals - but adds advanced lifeforms may be "nomads, looking to conquer and colonize."
AP; Reuters; BBC.
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It has always seemed odd to me that the scientific community has never seem to consider the possibility that the reason we don't find endless radio chatter throughout the galaxy and other coherent signals is that it is far too dangerous to emit these types of signals for long. I have often wondered over a beer if we have sealed our doom by broadcasting radio and television signals willy-nilly to all that will listen. Will aliens, when they pick up that rerun of I Love Lucy, have a good laugh or decide that we are far too dangerous to be allowed to exist any longer? Or worse yet decide that any planet that behaves in such a fashion, advertising their presence in every wavelength possible has never had "Galactic" contact before and thus is totally unprotected by any alliance with a more dangerous race or knowledge of advanced technology.
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