Turn a telescope to the eastern sky in the hours following midnight on Nov. 5 to see two colossal shadows darken the cloud ...

This article lists the top 7 largest moons in our Solar System, detailing their size, the planet they orbit, and key ...

The predawn hours of Aug. 8 present a perfect opportunity to see Jupiter's four largest moons line up next to the "King of the Planets" as it voyages through the stars of the constellation Gemini.

The Moon passes 5° north of Jupiter at 9 A.M. EDT. Just six percent illuminated by this evening, you can try to spot the young crescent Moon hanging above the gas giant in the western sky after sunset ...

In the eastern morning sky, Venus is being swallowed by the rising sun’s glare. Taking Venus’s place this month is Arcturus, ...

In a landmark observation by a team of international researchers, NASA's Juno spacecraft has, for the first time, clearly detected the auroras of Jupiter's moon Callisto. This discovery completes the ...

NASA is urging those who want to participate to enter in their names before a fast-approaching deadline in a project to send a chip with the data to one of Jupiter's moons. The space agency says ...

A laser-based ice drill can bore deep, narrow channels into ice while keeping both mass and energy requirements lower than ...