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Ganymede, biggest moon in the solar system, has a saltwater ocean

NASA says new observations from the Hubble Space Telescope confirm the presence of a subsurface ocean on Jupiter's largest moon.

By March 12, 2015


Jupiter's Ganymede moon hides a big ocean (pictures)

Observations from the Hubble Space Telescope have confirmed that there's a salty subsurface ocean on Jupiter's largest moon.

7 Images By March 12, 2015


NASA's Enceladus flyby: Cassini to dive through icy spray of Saturn's moon

The warm interior ocean of this moon of Saturn is bursting through its surface and the spacecraft plans to dive-bomb the satellite for a sip.

By October 14, 2015


Surprises revealed in new 4K Jupiter close-up by Hubble

The space telescope is taking a close look at the gas giant and finds that a massive wave on the planet seen decades ago wasn't just a fluke.

By October 13, 2015


NASA gets a step closer to looking for life on Jupiter moon Europa

NASA has more details on its planned mission to the Jupiter moon suspected to be the best other place for life to survive in the solar system.

By June 17, 2015


See Saturn moon's 'soda ocean' shooting to surface in sheets

Enceladus may have a warm ocean beneath its icy surface, but it may also be shooting through that crust in big sheets, perhaps filled with sea monkeys.

By May 7, 2015


Weird asteroid spun so fast it literally exploded itself

For the first time, astronomers have captured images of a rare type of asteroid that rotates so quickly it literally cracks itself up.

By March 20, 2015


Rare Jupiter triple-moon conjunction spotted by Hubble

Three of Jupiter's largest moons gather together to cross the planet's face for a rare astronomical show.

By February 5, 2015


Rare triple moon shadow transit to dance across Jupiter

In January 2015, astronomers will be able to observe three moon shadows travelling across the face of Jupiter.

By December 3, 2014


'Curtain of fire' blasts from one of Jupiter's moons

At the best of times, Jupiter's moon Io is a turbulent, torturous place. But last August, scientists say things really heated up.

By August 5, 2014