Stephen Hawking on First Contact Risks, Global Threats, and the Case for Space Settlement

To the point

Stephen Hawking warned that first contact with intelligent extraterrestrials could end badly and that humanity should spread into space to reduce existential risks from nuclear war, global warming, and engineered viruses, while remaining optimistic that careful, steady progress could eventually enable space settlements.

Contact with advanced aliens may not end well for Earth, warned Stephen Hawking
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Contact with advanced aliens may not end well for Earth, warned Stephen Hawking

Why Stephen Hawking believed first contact with aliens could endanger humanity.