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

Add Yahoo as a preferred source to see more of our stories on Google. Heads up, sky watchers and star gazers! April's full moon is still just over a week away, but there will be a very bright planet ...

A comet from another star system will swing by Mars on Friday as a fleet of spacecraft trains its sights on the interstellar visitor. We already know a decent amount about how planets form, but moon ...

April’s new moon brings dark skies, making it easier to see Venus, Jupiter, Mars and key constellations along with distant ...

Jupiter and Saturn may seem similar as gas giants, yet their vastly different moon systems reveal a deeper story shaped by ...

Five planets will light up the night sky this weekend -- and a crescent moon will join the gathering! To see all of them at the same time, stargazers will need to wake up before dawn on Sunday and ...

Jupiter and Saturn now have 15 more known moons between them. Four have been added to Jupiter and 11 to Saturn, bringing ...

NASA plans to launch a nuclear-powered spacecraft to Mars by 2028, a major step for deep space exploration and its planned ...