Space

Newly released images of Mars reveal a "smiley" salt deposit on the Red Planet's surface. A related study suggests that similar deposits, which were left behind from ancient lakes, may be a good place to look for signs of former life on Mars.

The Andromeda Galaxy, the Milky Way's closest galactic neighbor, glows brightly in a new Hubble Space Telescope image with swathes of ionized gas that fuel star formation.

NASA's testing a solar sail system in space, and the spacecraft that brought the tech there has snapped a photo.

Astronomers using the James Webb Space Telescope have discovered a pair of distant galaxies being twisted into a cosmic question mark thanks to a rare form of gravitational lensing.

A new video from an astronaut's vantage point in space captures a bright green burst over Earth as a meteor exploded in the night sky.

The source of a supposed alien broadcast that made researchers go "Wow!" may instead have been the result of a remarkably rare cosmic event, a new study suggests.

September's full Harvest Moon will drift into Earth's shadow for a partial eclipse on Sept. 17. It is also the second of four consecutive supermoons this year, making our natural satellite look bigger and brighter than usual.

These small galaxies are either crammed with stars or they host gigantic black holes. The data astronomers have collected continues to puzzle them.

The Very Large Telescope in northern Chile imaged a "super-Jupiter" exoplanet called 2M1207b, precisely 20 years ago this week. This was the first direct visual confirmation of a world beyond our solar system.

The Triangulum Galaxy, the third-largest member of the Local Group of galaxies, is shining with star formation in a new image from the Hubble Space Telescope.