Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Jupiter’s moon ...

Jupiter's giant moon Ganymede is the only known moon to have its own magnetic field — and it may be heating up in a process "not yet observed anywhere else," new research suggests. This standout ...

Jupiter's moon Ganymede is the largest moon in the solar system and is even wider than the planet Mercury. National Oceanic and Atmospheric Administration The history of our solar system is a ...

The asteroid strike would have "completely removed the original surface" of Ganymede. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A colossal ...

The first of the gas-giant orbiter’s back-to-back flybys will provide a close encounter with the massive moon after over 20 years. On Monday, June 7, at 1:35 p.m. EDT (10:35 a.m. PDT), NASA’s Juno ...

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Jupiter still dominates the constellation Gemini, visible all night and into the early-morning hours, setting only shortly before dawn begins to color the sky. Jupiter is now highest in the southern ...