Ganymede, Jupiter's largest moon and the solar system's largest, is bigger than Mercury and the dwarf planet Pluto, with a diameter of 5,268 kilometers.

Saturn surpasses Jupiter with 128 newly discovered moons, becoming the planet with the most moons in our solar system.

Fluorescent caves deep below America show how alien life could exist on one of Jupiter's moons, say scientists. The chemistry ...

To put it into perspective, that’s nearly double all the other planets’ moons. Poor Jupiter, once the reigning moon king, now ...

3, 2024 — Around 4 billion years ago ... July 21, 2024 — Europa and Enceladus, icy moons of Jupiter and Saturn respectively, have evidence of oceans beneath their crusts.

Billed at $103.50 for the first year. Renews at $6.50 ...

a 3.6-metre optical telescope on the summit of the dormant volcano Mauna Kea in Hawaii. The team had previously used the telescope to discover 62 more Saturnian moons, a discovery ratified in 2023 ...