HOUSTON—A new research analysis of a sample of Mars gathered by NASA’s Curiosity rover and initially studied by onboard instrumentation has determined that non-biological sources once considered ...

The United States military’s most enigmatic spacecraft is back in orbit, and this time officials are hinting more clearly at what it is doing up there. The eighth flight of the reusable X-37B space ...

Since NASA's Mars Reconnaissance Orbiter arrived at Mars in 2006, the spacecraft has delivered some of the most detailed imagery ever captured of the Red Planet.

"This data provides us with rare insight into how galaxies were transformed in the early universe." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...