Scientists believe life on alien worlds may be constrained by the same factors as on our planet.

Steven Spielberg's latest sci-fi blockbuster Disclosure Day has reignited interest in alien invasion stories, blending government conspiracies, extraterrestrial secrets, and humanity's first ...

Thousands of Brazilians received emergency alerts in the middle of the night warning of an "alien attack." Users received a flurry of push notifications mimicking government emergency alerts. It was ...

The night is dark; darker than usual. There's a warm breeze in the air, but otherwise nothing stirs save for a strange metallic object careening through the sky. As it moves, a soft glow follows, ...

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