Fred Saberhagen (1930–2007)
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A 1960s sci-fi writer dreamed up the killer self-copying space probe that scientists still cite when explaining why the galaxy seems empty.
Who they are
Fred Saberhagen (1930-2007), an American science-fiction author.
What they do
His 1962 Berserker series introduced the idea of a self-replicating predator probe, a machine that roams space, destroys life, and builds copies of itself.
How it works
The concept was later picked up and formalized in Stephen Webb's 2002 astrobiology book and David Brin's essays on alien life.
Why it matters
It shows how a fiction writer's invention became a serious tool scientists use to think about alien life and the silence of the cosmos.
The engine's record — word for word
American science-fiction author. 1962 Berserker series introduced the self-replicating predator probe concept. Later formalized in Stephen Webb's 2002 astrobiology survey + David Brin's xenology essays.
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