By Will Dunham WASHINGTON (Reuters) -In a potential landmark discovery, scientists using the James Webb Space Telescope have ...

Astronomers have discovered a major sign of life — and “the first hints… of an alien world” on a distant planet orbiting ...

It would take 120 years to travel to planet K2-18b at the speed of light. Here's how we know what could lie there.

The James Webb Space Telescope may have detected life-associated gas in the atmosphere of a far-off planet. The news is being ...