It's possible that Mars' moons were originally asteroids that were captured by the planet's gravitational pull. There's also ...

Stargazers in the U.S. will find the slender form of the crescent moon roughly 20 degrees above the western horizon right at ...

While NASA's Mars Sample Return initiative is in political hot water, China is moving ahead on plotting out its rendezvous ...

Look for them around 10 p.m. local daylight time, roughly one-quarter up in the western sky. In addition to their closeness ...

ESA's Mars Express orbiter captured footage of the Mars' moon Deimos pass in front of Ganymede, Europa, Jupiter, Io and ...

Pluto will reach its closest approach to Earth and align opposite the Sun on July 25, appearing slightly brighter (magnitude ...

More than half a century after the United States won the race to the moon, the White House is setting its sights on a new frontier: Mars. In a move ...

Over the last few years, the term "Goldilocks zone" has come to be widely used to describe the range of distances from a star ...

Over the last few years, the term "Goldilocks zone" has come to be widely used to describe the range of distances from a star ...

China’s Tianwen-3 Mars sample return mission could bring Red Planet rocks back to Earth as early as 2031—years ahead of competing U.S.-European efforts ...