Two astronauts from the three-person Shenzhou 20 mission ventured outside Tiangong to do the spacewalk, which concluded ...

Mercury is farthest from the sun in Earth's morning sky on Aug. 19. Mercury will be farthest from the sun on Tuesday (Aug. 19 ...

When the Artemis 2 astronauts launch to the moon next year, they will be accompanied by one of 25 plush toys just named a ...

SpaceX sent another batch of its Starlink broadband internet satellites into low Earth orbit today (Aug. 18), atop a Falcon 9 ...

Beyond the familiar planets lies a fascinating frontier filled with icy worlds, mysterious orbits, and cosmic curiosities.

A report published in June found that the world only has three years before it crosses the 1.5 C climate target. So what ...

Like birds returning to their nests, these feather-like grid fins help steer rockets back down through the atmosphere toward ...

Auroras may be visible from Alaska to Iowa as an incoming speedy solar wind could spark geomagnetic storm conditions overnight.

The star, named WD 0525+526, is located about 128 light-years from Earth. Though it appeared rather standard at first glance through visible light, further observations using the Hubble telescope ...

A rare August morning alignment brings Mercury, a thin crescent moon and the Beehive Cluster together in the predawn sky.

Viewing with the aid of 10x50 binoculars will bring the light cast by a stellar cluster into sharper focus, or even allow you ...

On Aug. 17, 1877, American astronomer Asaph Hall discovered Mars's moon Phobos.