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

NASA’s Juno spacecraft captured a rare dark-rayed crater on Ganymede, offering fresh clues about the moon’s icy surface, ...

The ocean on Ganymede may have more water than all the water on Earth. In this artist’s concept, the moon Ganymede orbits the giant planet Jupiter. NASA’s Hubble Space Telescope observed aurorae on ...

NASA’s Juno spacecraft flew closer to Jupiter’s moon Ganymede than any spacecraft in the last two decades, according to NASA. The moon is the largest in our solar system. (FILE-A screenshot from the ...

When searching for the unknown, classic physics wisdom holds that a bigger detector boosts the chances of discovery. A physicist is taking that advice to heart, advancing a bold plan to use none other ...

The Solar System is more than just planets; it is home to a dazzling variety of moons, each with its own unique charm. Some are icy and serene, others are stormy or volcanic. Among the many satellites ...

Eight distant worlds hold secrets that still puzzle scientists and spark endless curiosity. Each moon offers a strange allure ...

CAPE CANAVERAL, Fla. (AP) — NASA's Juno spacecraft has provided the first close-ups of Jupiter's largest moon in two decades. Juno zoomed past icy Ganymede on Monday, passing within 645 miles. It's ...

Our solar system’s largest moon, Ganymede of Jupiter, has never been completely mapped — until now. Scientists led by Wheaton College’s Geoffrey Collins combined data from NASA’s Voyager 1, 2 and ...