Astronomers are preparing to study a dwarf planet that last came near Earth 11,000 years ago. Sedna is moving closer to the Sun, and this has intrigued experts who are eager to learn about the distant ...

For years, scientists have been looking for signs of liquid water just beneath the surface of Mars. New research recently published in Nature Communications may have dried up one of the most ...

Dark “slope streaks,” likely resulting from dust avalanches, stretch across an area of Mars called Acheron Fossae in this ...

"One of the most successful and enduring feats of interplanetary exploration, NASA's Opportunity rover mission is at an end after almost 15 years exploring the surface of Mars and helping lay the ...

In our analysis this week, we look at how NASA's proposed budget would slash the agency's science division by nearly 50%.

Curiosity stitched 291 Mastcam photos into a color-balanced 360° panorama of Gale Crater’s “boxwork” ridges—spiderweb-like ...

Sedna, a distant dwarf planet three-quarters the size of Pluto, is inching toward the brightest star in our sky — and in 2076 ...

NASA’s Mars Reconnaissance Orbiter has learned to pull off daring 120-degree rolls that give its SHARAD radar ...

Look to the skies on Thursday night and you can see something unusual: the ‘Moon illusion’, which happens when our satellite ...

The spacecraft now almost tips upside down relative to Mars to give its radar the best view. The Mars Reconnaissance Orbiter ...