A social media page that frequently posts fabricated stories about alien life shared another outlandish tale about alien robot spiders in Antarctica.

Are we truly alone—or just unable to hear anyone else? A NASA scientist suggests alien civilizations may exist, but their technology could be far less detectable than we’ve long assumed.

This point, known as perihelion, was around 210 million kilometers from the sun, or 1.4 times the distance between the sun ...

A mysterious interstellar comet has reignited a fierce debate among astronomers, and now, Elon Musk has entered the fray.