A new study suggests Ganymede—our neighborhood's biggest moon—still has a hot, churning core cranking out its unique magnetic ...

Ganymede, the solar system's largest moon, uniquely generates its own magnetic field. New research suggests its still-forming ...

The moon dances with the king of the planets, with the horizon as their stage. When you purchase through links on our site, ...

Sky This Week is brought to you in part by Celestron. Friday, May 15Are you familiar with the constellation Crater the Cup?

On May 20, witness the waxing crescent moon align with bright Jupiter after sunset, creating a stunning celestial display ...

A new study reanalyzing 14 years of Hubble data weakens evidence for water vapor plumes on Europa, though scientists say the ...

See dazzling planets, the Milky Way and a trio of celestial animals brightening the spring sky around May's new moon.

On Wednesday, May 20, skywatchers looking west after dusk will be able to spot the crescent Moon glowing beside Jupiter for ...

The Moon is now just over two days old, a sliver of its eastern limb lit by the Sun as sunrise slowly crawls across the nearside. Catch the delicate crescent this evening, when it stands just 2° from ...

Looking for a sky event this week? Check out our full Sky This Week column. May 21: Check in on Saturn and Mars Tonight we're ...

Ganymede, Jupiter's largest moon, is also the solar system's largest satellite, even larger than the planet Mercury. It is ...

Venus and Jupiter are the top evening features for your observing run after sunset in May. Jupiter also hosts a handful of exciting double transits - and double shadow transits - involving Europa and ...