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Sky This Week is brought to you in part by Celestron. Friday, December 12Ganymede reappears from occultation behind Jupiter ...

The data show that powerful radiation has transformed Ganymede's polar regions. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. NASA's Juno ...

Orbiting Jupiter, NASA's Juno spacecraft streaked past Ganymede on Monday, beaming back the first close-up views of the largest moon in the solar system since the Galileo orbiter last flew past in ...

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

Since its discovery in January 1610, Ganymede has been the focus of repeated observation, first by Earth-based telescopes, and later by flyby missions and spacecraft orbiting Jupiter. These studies ...

Studies of features in Jupiter’s spectacular and rapidly changing aurorae have given new insights into the complex electromagnetic interactions between the giant planet and two of its innermost moons.

Using little more than a backyard telescope and his experience observing the night sky, amateur astronomer Emmanuel Kardasis has produced a detailed map of Jupiter’s largest moon Ganymede. “Ganymede ...

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 ...

NASA has confirmed that Ganymede, one of the moons orbiting Jupiter, has a saltwater ocean lying below its icy exterior, making it a viable location for life to flourish. The scientists studying the ...