NASA astronaut Suni Williams works outside the International Space Station. Credit: NASA | edited by Space.com's Steve Spaleta ...

Fall officially begins with the autumnal equinox Monday, meaning one of Chicago's most iconic phenomena will return at sunrise and sunset.

Experience the breathtaking beauty of mountains rising above the clouds, captured in cinematic 4K during the golden hour. This footage highlights the serene atmosphere of high peaks, rolling clouds, ...

On September 21-22, a partial solar eclipse will be visible across parts of the southern hemisphere, briefly dimming skies ...

While opposition itself is a one-night event, taking place on Sept. 21, Saturn's glow won't fade quickly. The planet will ...

After lifting off at 5:30 a.m. Sept. 18 from Cape Canaveral, the Falcon 9 deployed satellites into low-Earth orbit on the ...

Regulus, a distant star, Venus and our moon will be visible during a conjunction tonight, and how Californians can best see ...

The moon and Venus will shine vividly alongside a bright star in the early morning in a celestial rendezvous that should be visible across the U.S.

Liftoff occurred at about 5:30 a.m. from Space Launch Complex 40. While Falcon 9 missions have become a near-routine sight in ...

Did you see the bright star next to the moon? That was Venus, and part of a conjunction between the moon, Venus and the star ...

The equinox marks the arrival of fall in the Northern Hemisphere on Sept. 22. Are you ready for fall? The official arrival of fall is the autumnal equinox, which occurs in the Northern Hemisphere on ...

Live updates from Thursday morning’s SpaceX Starlink 10-61 mission that launched a Falcon 9 rocket from Cape Canaveral Space Force Station in Florida.