Ganymede is the largest moon in the solar system — but getting there is brutally hard. The journey requires massive amounts ...

The largest moon in our solar system may have been knocked off its axis and cracked like an egg four billion years ago by an asteroid bigger than the one that wiped out the dinosaurs on Earth at the ...

Looking for a sky event this week? Check out our full Sky This Week column. November 30: Watch Titan reappear Jupiter is the ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. This article is more than 4 years old. To present the best ...

An Ariane 5 rocket originally expected to launch Thursday is now set to take off Friday, boosting a $1.7 billion European Space Agency probe on a roundabout 8-year voyage to Jupiter where it will ...

An ultraviolet light show has provided space scientists with the best evidence yet that the Jovian moon Ganymede has a gigantic ocean beneath its icy surface. Images captured by the Hubble Space ...

NASA has detected water vapor for the very first time in the atmosphere of Ganymede — not only Jupiter's largest moon, but the largest moon in our entire solar system. Researchers made the discovery ...

Juno's science team has shared a new infrared image map of the gigantic moon orbiting Jupiter known as Ganymede to celebrate the spacecraft's 10th year since launch. Ganymede is a massive moon larger ...

Most people who have an interest in space and astronomy know that Europa and Enceladus have subsurface oceans that could, according to exobiologists, contain alien life. Another notable moon is Io, ...

Astronomers have found the most conclusive evidence yet that a large watery ocean lies beneath the surface of Jupiter’s moon Ganymede. With the discovery, Ganymede joins Enceladus and Europa as ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. The shadow of Ganymede is projected onto the cloud-tops of ...