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Dwarf Planet Eris Is More Massive Than Pluto
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
... > full story
NASA Spacecraft Gets Boost From Jupiter For Pluto Encounter
NASA's New Horizons
spacecraft successfully
completed a flyby of Jupiter
early this morning (Feb.
28), using the massive
planet's gravity to pick up
... > full story
Zooming To Pluto, New Horizons Spacecraft Approaches Jupiter
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
... > full story
NASA Spacecraft En Route To Pluto Prepares For Jupiter Encounter
NASA's New Horizons
spacecraft is on the
doorstep of the solar
system's largest planet. The
spacecraft will study and
... > full story
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Fifth Dwarf Planet Named Haumea
September 22, 2008 — The International Astronomical Union has announced that the object previously known as 2003 EL61 is to be classified as the fifth dwarf planet in the Solar System and named Haumea. This now means ... > full story -
Dwarf Planet Formerly Known As Xena Officially Named 'Eris'
September 15, 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 24, 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 -
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 Finds 'Tenth Planet' Is Slightly Larger Than Pluto
April 17, 2006 — NASA's Hubble Space Telescope has resolved the "tenth planet," nicknamed "Xena," for the first time and has found that it is only just a little larger than Pluto. Though previous ground-based ... > full story -
Researchers Describe Discovery Of Pluto's New Moons
February 23, 2006 — Researchers at the Johns Hopkins University Applied Physics Laboratory and the Southwest Research Institute describe the discovery of two new moons around Pluto -- a finding that made the ninth ... > full story -
Kuiper Belt Moons Are Starting To Seem Typical
January 17, 2006 — In the not-too-distant past, the planet Pluto was thought to be an odd bird in the outer reaches of the solar system because it has a moon, Charon, that was formed much like Earth's own moon was ... > full story -
Measuring Charon: Astronomers Seize Rare Opportunity
January 5, 2006 — Being in the right place at the right time gave a group of Massachusetts research astronomers a unique opportunity to study Pluto's largest moon Charon. The resulting measurements, to unprecedented ... > full story -
University Of Colorado Student-built Instrument Set To Launch On Pluto Mission
December 29, 2005 — The University of Colorado at Boulder's long heritage with NASA planetary missions will continue Jan. 17 with the launch of a student space dust instrument on the New Horizons Mission to Pluto from ... > full story -
Hubble Reveals Possible New Moons Around Pluto
November 1, 2005 — Using NASA's Hubble Space Telescope to view the ninth planet in our solar system, astronomers discovered Pluto may have not one, but three moons. If confirmed, the discovery of the two new moons ... > full story
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