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New Capture Scenario Explains Origin Of Neptune's Oddball Moon Triton
May 11, 2006 — Triton, unique among all the large moons in the solar system because it orbits Neptune in a direction opposite to the planet's rotation, may have abandoned an earlier partner to arrive in its unusual ... > full story -
Hubble Makes Movie Of Neptune's Dynamic Atmosphere
September 2, 2005 — New NASA Hubble Space Telescope images of the distant planet Neptune show a dynamic atmosphere and capture the fleeting orbits of its satellites. The images have been assembled into a time-lapse ... > full story -
Scientists Discover Pluto Kin Is A Member Of Saturn Family
May 7, 2005 — Saturn's battered little moon Phoebe is an interloper to the Saturn system from the deep outer solar system, scientists have concluded. Phoebe was left behind from the solar nebula, the cloud of ... > full story -
Cassini Finds An Atmosphere On Saturn's Moon Enceladus
March 22, 2005 — The Cassini spacecraft's two close flybys of Saturn's icy moon Enceladus have revealed that the moon has a significant atmosphere. Scientists, using Cassini's magnetometer instrument for ... > full story -
Nuclear-Powered Mission To Neptune Could Answer Questions About Planetary Formation
December 20, 2004 — In 30 years, a nuclear-powered space exploration mission to Neptune and its moons may begin to reveal some of our solar system's most elusive secrets about the formation of its planets -- and ... > full story -
Rings Around The Planets: Recycling Of Material May Extend Ring Lifetimes
December 19, 2004 — Although rings around planets like Jupiter, Saturn, Uranus and Neptune are relatively short-lived, new evidence implies that the recycling of orbiting debris can lengthen the lifetime of such rings, ... > full story -
Did Our Sun Capture Alien Worlds? Close Encounter May Explain Some Objects Beyond Neptune
December 8, 2004 — Computer simulations show a close encounter with a passing star about 4 billion years ago may have given our solar system its abrupt edge and put small, alien worlds into distant orbits around our ... > full story -
Scientists Discover First Of A New Class Of Extrasolar Planets
August 31, 2004 — Astronomers have announced the first discovery of a new class of planets beyond our solar system about 10 to 20 times the size of Earth - far smaller than any previously detected. The planets make up ... > full story -
Cassini Opens A Cosmic Time Capsule
June 25, 2004 — Like a woolly mammoth trapped in Arctic ice, Saturn's small moon Phoebe may be a frozen artifact of a bygone era, some four billion years ago. The finding is suggested by new data from the ... > full story -
Cassini VIMS Team Finds That Phoebe May Be Kin To Comets
June 24, 2004 — Scientists may at last have settled the debate on the origin of Saturn's moon, Phoebe. Saturn long ago captured its largest outermost satellite, Phoebe, when the moon wandered in from the frigid ... > full story
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