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Charon: An Ice Machine In The Ultimate Deep Freeze
July 19, 2007 — Frigid geysers spewing material up through cracks in the crust of Pluto's companion Charon, and recoating parts of its surface in ice crystals, could be making this distant world into the equivalent ... > full story -
Dwarf Planet Eris Is More Massive Than Pluto
June 17, 2007 — Aptly named after the Greek goddess of conflict, the icy dwarf planet, Eris, has rattled the general model of our solar system. The object was discovered by astronomer Mike Brown of Caltech in the ... > full story -
Kuiper-Belt Object Was Broken Up By Massive Impact 4.5 Billion Years Ago
March 22, 2007 — In the outer reaches of the solar system, there is an object known as 2003 EL61 that looks like and spins like a football being drop-kicked over the proverbial goalpost of life. Still awaiting a more ... > full story -
Zooming To Pluto, New Horizons Spacecraft Approaches Jupiter
January 19, 2007 — Just a year after it was dispatched on the first mission to Pluto and the Kuiper Belt, the APL-built New Horizons spacecraft is on the doorstep of the solar system's largest planet -- about to swing ... > full story -
NASA Spacecraft En Route To Pluto Prepares For Jupiter Encounter
January 18, 2007 — NASA's New Horizons spacecraft is on the doorstep of the solar system's largest planet. The spacecraft will study and swing past Jupiter, increasing speed on its voyage toward Pluto, the Kuiper Belt ... > full story -
Dwarf Planet Formerly Known As Xena Officially Named 'Eris'
September 14, 2006 — The International Astronomical Union has announced that the dwarf planet known as Xena since its 2005 discovery has been named Eris, after the Greek goddess of discord. Eris's moon will be known as ... > full story -
Pluto Downgraded To 'Dwarf Planet' Status; Solar System Now Has Eight Planets
August 25, 2006 — The International Astronomical Union (IAU) has downgraded the status of Pluto to that of a "dwarf planet," a designation that will also be applied to the spherical body discovered last year by ... > full story -
Bigger Solar System? Astronomers Debate Definition Of 'Planet' And 'Plutons'
August 16, 2006 — The world's astronomers, under the auspices of the International Astronomical Union (IAU), have concluded two years of work defining the difference between "planets" and the smaller "solar system ... > full story -
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 -
Evidence Mounts For Sun's Companion Star
April 24, 2006 — The Binary Research Institute (BRI) has found that orbital characteristics of the recently discovered planetoid, "Sedna," demonstrate the possibility that our sun might be part of a binary star ... > full story
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