A rare visitor from another star system prompted SETI to hunt for alien technology, but the mysterious object appears to be a ...
A newly spotted interstellar visitor just got an unusually close listen from California scientists — in a search for signs of ...
As much as Steven Spielberg likes aliens, he seems to prefer holding them at arm’s length. The creatures in Close Encounters ...
Researchers propose turning a future NASA moon base into a quarantine station that would screen space samples before they ever reach Earth.
An interstellar comet that blazed past the sun last year could be nearly three times older than our solar system and is ...
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