Ganymede's ocean is sandwiched between two layers of ice. That's not particularly hospitable to life, says planetary scientist William McKinnon of Washington University in St. Louis, ...

Ganymede is having a moment because NASA’s Juno mission observed salts and organic compounds on its surface, possibly from an ocean that lies beneath its crust of ice.

An ultraviolet light show is the best evidence that Ganymede has a gigantic ocean beneath its icy surface. Images captured by the Hubble Space Telescope of the aurorae in the moon's tenuous ...

The subsurface ocean confirmed by Hubble is believed to be at least 60 miles thick, containing more water than all of Earth's ocean's combined. As such, Ganymede joins a growing list of planets ...

Computer models show that if Ganymede did not have a subsurface ocean, the changes in Jupiter’s magnetic field should cause the bands of hot, electrically charged gas to rock six degrees over a ...

Huge Saltwater Ocean Found on Jupiter Moon Ganymede. Published Mar 13, 2015 at 4:16 PM EDT Updated Mar 21, 2016 at 1:16 AM EDT.

"Ganymede's ocean might be organized like a Dagwood sandwich," study lead author Steve Vance, of NASA's Jet Propulsion Laboratory (JPL) in Pasadena, Calif., said in a statement, referring to the ...

Ganymede is the only moon in the solar system with a magnetic field. “This suggests we are seeing the remnants of a deep ocean brine that reached the surface of this frozen world,” said Bolton.

Scientists at NASA say that Jupiter’s largest moon, Ganymede, may not have a single large ocean. Instead, it may be built like a club sandwich, with alternating layers of ice and water.

We’ve suspected Ganymede had an ocean since the 1970s, then in the 1990s Galileo confirmed the ocean’s existence. Galileo also found evidence that the ocean reaches hundreds of miles deep, and ...

Ganymede will also now be more competitive when it comes to garnering attention among the Jovian moons -- its sibling Europa and its presumed subsurface ocean has long excited space geeks, even ...

Astronomers have found the most conclusive evidence yet that a large watery ocean lies beneath the surface of Jupiter’s moon Ganymede. Scientists have suspected for decades that a subterranean ...