When we imagine alien life, we picture monsters, insects, or tentacles—but what if the most realistic aliens are human-like? Evolution tends to solve the same problems with similar designs, and ...

Some astronomers have made it their life’s work to find “Earth 2.0,” a rocky planet orbiting a star just like our own Sun. It makes sense; we know life works here, so why not look for a mirror image ...

Language and radio signals may not matter to aliens. Instead, they might be using patterns to leave a biological fingerprint.

If aliens disclose tomorrow, is it 'Arrival''s calm contact, 'Don't Look Up''s denial, or 'Independence Day''s invasion? We break down the real scenarios fans are debating.

NASA's James Webb Telescope caught new images of the Helix Nebula that sheds light on how stars recycle their material back ...