High-energy particles zipping through the cosmos are harmful to life on Earth, but scientists think it could be food for potential alien life elsewhere. Saturn's moon Enceladus (shown here in a 2006 ...

The spectrum of alien appearances across popular culture is vast, limited only by human imagination. From the sharp, angular features of Captain Spock to the dinosaur-like neck and big, expressive ...

In July, researchers using the NASA-funded Asteroid Terrestrial-impact Last Alert System survey telescope in Chile made an exceedingly rare discovery: a mysterious object passing through the solar ...

They’ve got their 3Is on the prize. The highly anticipated data 3I/ATLAS’ Earth tour last month is in. A targeted scan of 3I/ATLAS for signs of radio transmitting tech has come up empty — but Harvard ...