The moon and Jupiter will meet before dawn on Sept. 8, before the moon hides the giant planet from view in a rare daytime ...

Looking for a sky event this week? Check out our full Sky This Week column. September 7: Venus and Spica, side by side The ...

What if Jupiter’s 79 moons weren’t gravitationally bound to Jupiter? What if they became rogue objects orbiting on their own ...

Each Monday, I pick out North America’s celestial highlights for the week ahead (which also apply to mid-northern latitudes ...

Add Yahoo as a preferred source to see more of our stories on Google. The hellish surface of a moon of Jupiter known as Io is riddled with hundreds of lava-spewing volcanoes that make the world one of ...

The Moon will pass directly in front of Jupiter on September 8, creating a rare celestial disappearing act. Here is when the ...

We already know a decent amount about how planets form, but moon formation is another process entirely, and one we're not as familiar with. Scientists think they understand how the most important moon ...

A massive NASA mission to explore if one of Jupiter’s moons could support life launched Monday morning from Florida. The Europa Clipper spacecraft lifted off aboard SpaceX’s Falcon Heavy rocket bound ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Io, the innermost giant moon of Jupiter, may not have a ...

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 ...