Using the James Webb Space Telescope, astronomers have found a "first of its kind" world, an exoplanet that is twice the size of Earth and has an atmosphere packed with steam.

Find out what you can see in the night sky for tonight, from planets and stars to dazzling meteor showers.

The U.S. military's X-37B space plane is about to begin a series of novel maneuvers, according to a rare official update on the spacecraft.

Nabta Playa in Egypt is an ancient stone circle that researchers suspect was used to determine the summer solstice, which signaled rain was on the way.

On Oct. 11, 1984, Kathryn Sullivan became the first American woman to walk in space

Space.com's image of the day rounds up the most awe-inspiring space photos right here, with a new image everyday.