Dark forest hypothesis
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The dark forest hypothesis is the idea that extraterrestrial civilizations may exist in abundance across the universe, but remain silent and hidden out of fear that revealing themselves would lead to
Black Forest pictured in darkness, the concept from which the novel took its name
Fermi paradox
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The Fermi paradox is the seeming inconsistency between the lack of evidence of extraterrestrial civilizations and the apparently high likelihood of their existence.
Dark forest hypothesis
…themselves would lead to destruction by a more technologically advanced and hostile civilization. It is one of several proposed explanations of the Fermi paradox, which contrasts the apparently high probability of extraterrestrial life with the lack of evidence for it. The hypothesis derives its name from Liu…
Russian rocket scientist Konstantin Tsiolkovsky
Carl Sagan, seen here beside a Viking lander mockup, first mentioned the paradox in print.
Enrico Fermi (1901–1954)
Radio telescopes are often used by SETI projects.