The James Webb Space Telescope is turning distant exoplanets from anonymous dots of light into worlds with weather, chemistry, and sometimes even hints of clouds. By dissecting the faint starlight ...

Photosynthesis changed Earth in powerful ways. When photosynthetic organisms appeared, it led to the Great Oxygenation Event. That allowed multicellular life to evolve and resulted in the ozone layer.

In the long and hallowed history of flight, engineers are writing a new chapter. It’s a chapter that involves skies more distant than the stratosphere of our own world. Space flight designers today ...

Not since the days of Erich von Daniken's "Chariots of the Gods," director Steven Spielberg's "Close Encounters of the Third Kind," and publisher Bob Guccione's "Omni" magazine has there been this ...

There's definitely more action afoot in the second season of TNT's "Falling Skies," a drama about a group of human resistance fighters battling alien invaders. There's definitely more action afoot in ...