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Nov 10, 2015 06:30 PM ET // Irene Klotz
Scientists have known for some time that Phobos, the larger of Mars’ two small moons, is a victim of gravity, edging closer toward its parent planet.
Oct 27, 2015 03:00 PM ET // Irene Klotz
On Wednesday, NASA's Saturn-orbiting Cassini spacecraft will take a deep but quick plunge through plumes of water vapor shooting out hundreds of miles into space from the planet’s small, ocean-bearing moon Enceladus.
Oct 19, 2015 08:30 PM ET // Irene Klotz
A series of laboratory tests show that some terrestrial bacteria would adapt well to the salty and sulfate-rich ocean believed to exist beneath the hard icy shell of Europa.
Sep 21, 2015 06:38 AM ET // Elizabeth Howell
Despite initial speculation that Pluto could be similar to Neptune's moon Triton, early data from NASA's New Horizons spacecraft shows Pluto is a different beast indeed.
Sep 18, 2015 06:00 PM ET // Elizabeth Howell
The big moons of Jupiter may have oceans underground. Although they are driven by the same mechanism, their nature can be radically different.
Sep 16, 2015 11:45 AM ET // Irene Klotz
By measuring tiny wobbles in Enceladus' orbit, scientists have figured out that Enceladus has a giant ocean.
Sep 2, 2015 03:00 PM ET // Mike Wall,
An icy moon of Saturn hangs against the face of its giant parent planet in a breathtaking new image captured by NASA's Cassini spacecraft.
Aug 28, 2015 03:20 PM ET // Geoff Gaherty, Starry Night Education
You'll probably hear a lot about a 'supermoon' over the next few months. This is not a term that astronomers use, but here are some facts about what will actually happen.
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