Stephan Hawking worries about aliens from other planets finding us before we find them  

“Stephen Hawking is again warning about announcing our presence to any alien civilizations that might be out there, especially those that could be more technologically advanced.”

There’s a potentially habitable super-Earth, Gliese 832c, only 16 light-years away.

Hawking says:

“One day we might receive a signal from a planet like this, but we should be wary of answering back. Meeting an advanced civilization could be like Native Americans encountering Columbus. That didn’t turn out so well.”

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