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Extraterrestrials in fiction
Extraterrestrials in fiction
Grey aliens were conceived as a result of the Barney and Betty Hill incident.
Grey aliens were conceived as a result of the Barney and Betty Hill incident.
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Besides Earth, Mars, Europa and Enceladus are the most likely places in the Solar System to find life.
Besides Earth, Mars, Europa and Enceladus are the most likely places in the Solar System to find life.
Lifeforms produce a variety of biosignatures that may be detectable by telescopes.
Lifeforms produce a variety of biosignatures that may be detectable by telescopes.
The Green Bank Telescope is one of the radio telescopes used by the Breakthrough Listen project to search for alien communications.
The Green Bank Telescope is one of the radio telescopes used by the Breakthrough Listen project to search for alien communications.
Artist's impression of Gliese 581 c, the first terrestrial extrasolar planet discovered within its star's habitable zone
Artist's impression of Gliese 581 c, the first terrestrial extrasolar planet discovered within its star's habitable zone