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Latest Dwarf planet Stories

2010-06-20 08:18:52

A large group of scientists, including Jay Pasachoff, Bryce Babcock, and Steven Souza at Williams College, reveal the character of one of the most distant objects in the solar system in a scientific paper which appeared in the June 17 issue of the journal Nature. In observing the object named 2002 TX300 on October 9, 2009, as it passed in front of a distant star, they could tell what its surface is like and its size. For several years, Pasachoff, Babcock, and Souza have worked with James...

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2010-06-16 14:31:04

Occultation provided enough data to determine the KBO's size and albedo Until now, astronomers have used telescopes to find Kuiper Belt objects (KBOs), moon-sized bodies, and obtain their spectra to determine what types of ices are on their surface. They have also used thermal-imaging techniques to get a rough idea of the size of KBOs, but other details have been difficult to glean. While astronomers think there are about 70,000 KBOs that are larger than 100 kilometers in diameter, the...

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2010-06-08 07:15:00

Deep in the heart of the asteroid belt, on its way to the first of the belt's two most massive inhabitants, NASA's ion-propelled Dawn spacecraft has eclipsed the record for velocity change produced by a spacecraft's engines. The previous standard-bearer for velocity change, NASA's Deep Space 1, also impelled by ion propulsion, was the first interplanetary spacecraft to use this technology. The Deep Space 1 record fell on Saturday, June 5, when the Dawn spacecraft's accumulated acceleration...

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2010-05-05 06:35:00

"Standard orbit, Mr. Sulu." Captain Kirk barks out the order with such confidence. He knows the USS Enterprise can slip in and out of planetary orbits with ease. But it's only easy in the realm of science fiction. In the real world, such maneuvers have been impossible --until now. Enter Dawn, NASA's cutting edge mission to the asteroid belt. Powered with a futuristic sounding new technology called "ion propulsion," this spacecraft will perform space moves rivaling those of the Enterprise. At...

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2010-04-16 13:13:29

Lonely Pluto floats in the darkness at the edge of our solar system. It's so far away even the Hubble Space Telescope has trouble making out the details. Nevertheless, Pluto is so interesting, even fuzzy images of the dwarf planet are compelling. A team of researchers led by Marc Buie of the Southwest Research Institute recently released the best Hubble images to date. The data reveal an icy molasses-colored world with a surprising amount of activity. Buie compared Hubble images taken in 1994...

2010-02-04 12:00:00

WASHINGTON, Feb. 4 /PRNewswire-USNewswire/ -- NASA has released the most detailed and dramatic images ever taken of the distant dwarf planet Pluto. The images from NASA's Hubble Space Telescope show an icy, mottled, dark molasses-colored world undergoing seasonal surface color and brightness changes. (Logo: http://www.newscom.com/cgi-bin/prnh/20081007/38461LOGO) Pluto has become significantly redder, while its illuminated northern hemisphere is getting brighter. These changes are most...

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2009-09-16 05:30:00

A dark red area discovered on dwarf planet Haumea appears to be richer in minerals and organic compounds than the surrounding icy surface. The discovery will be presented at the European Planetary Science Congress in Potsdam by Dr Pedro Lacerda on Wednesday September 16. The spot was discovered by measuring changes in its brightness as it rotates.  The origin of the spot is unknown, however its "light curve", which describes variations in its brightness over time, is not exactly the same...

2009-08-02 20:08:31

Pluto's lowered celestial status will probably stick at an upcoming meeting of astronomers in Rio de Janeiro, an American astronomer predicted Sunday. Pluto was reduced from a full-fledged planet -- the ninth in the Earth's solar system -- to dwarf planet at a meeting of the International Astronomical Union three years ago in Prague, Czech Republic. The Houston Chronicle reported Stephen Maran, co-author of the recent book Pluto Confidential, says politics may keep the only planet discovered...

2009-04-20 13:34:32

Astronomers using the U.S. space agency's Spitzer Space Telescope say they have discovered at least one in 100 white dwarf stars has orbiting asteroids. The international team of astronomers say their finding suggests the orbiting asteroids and rocky planets once hosted solar systems similar to our own. White dwarf stars are the compact, hot remnants of stars such as the sun. The new observations suggest such Earth-sized stars are often polluted by a gradual rain of closely orbiting dust that...

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2009-03-02 11:48:22

Using ESO's Very Large Telescope, astronomers have gained valuable new insights about the atmosphere of the dwarf planet Pluto. The scientists found unexpectedly large amounts of methane in the atmosphere, and also discovered that the atmosphere is hotter than the surface by about 40 degrees, although it still only reaches a frigid minus 180 degrees Celsius. These properties of Pluto's atmosphere may be due to the presence of pure methane patches or of a methane-rich layer covering the dwarf...


Latest Dwarf planet Reference Libraries

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2004-10-19 04:45:41

Uranus' moon Titania -- Titania is the largest moon of Uranus. Titania was discovered on January 11, 1787 by William Herschel. All of the moons of Uranus are named for characters from Shakespeare or Alexander Pope. Names for the first four discovered moons of Uranus, Oberon, Titania, Ariel and Umbriel, were given by John Herschel, the son of William. Titania was named after Titania, the Queen of the Faeries in A Midsummer Night's Dream. Titania is composed of roughly 50% water...

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2004-10-19 04:45:40

Brown Dwarf -- Brown dwarfs are a special type of low-mass star (approximately 13-70 Jupiter masses) that do not have nuclear fusion occurring in their cores during their time on the main sequence. Early in their development most brown dwarf stars do have lithium fusion in their cores, and a lack of lithium is a test for low-mass objects that are suspected of being brown dwarfs. Many brown dwarfs continue to glow in the red and infrared after their lithium is exhausted. This glow is...

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