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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.
Aug 24, 2015 11:30 AM ET // Irene Klotz
Volcanic 'fire fountains' erupting from the lunar surface, similar to what occurs in Iceland today, most likely were fueled by carbon monoxide gas, a new study shows.
Aug 16, 2015 05:57 PM ET // Ian O'Neill
As we rapidly approach Cassini's thrilling final stage of its mission, the list of 'final' events is gradually shrinking. Next on the NASA spacecraft's final list is Dione -- coming within 295 miles of the Saturn moon's surface on Monday.
Jul 31, 2015 05:03 PM ET // Ian O'Neill
In new observations beamed back from Cassini, Saturn's icy moon Tethys has decided to show off its mysterious stripes.
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