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2006-02-01 16:21:07

By Patricia Reaney LONDON (Reuters) - A distant object discovered in space last year which could be the 10th planet in our solar system is around a third bigger than Pluto, German astrophysicists said on Wednesday. They determined the diameter of the potential new planet, known as 2003 UB313, by measuring its thermal emission. "We actually measured the size of UB313 which was not known prior to these observations," Professor Frank Bertoldi, of the University of Bonn and the Max...

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2006-02-01 12:45:00

LOS ANGELES -- Scientists say they have confirmed that a so-called 10th planet discovered last year is bigger than Pluto, but that likely won't quell the debate over what makes a planet. The astronomers who spotted the icy, rocky body - informally called UB313 - had reported only a rough estimate of its size based on its brightness. But another group of researchers has come up with what is believed to be the first calculation of UB313's diameter. By measuring how much heat it radiates,...

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2006-01-18 06:40:00

NASA -- 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 formed. But Pluto is getting a lot of company these days. Of the four largest objects in the Kuiper belt, three have one or more moons. "We're now beginning to realize that Pluto is one of a small family of similar objects, nearly all of which have moons in orbit around them," says Antonin...

2005-10-02 11:51:59

By Deborah Zabarenko WASHINGTON (Reuters) - Xena, the possible 10th planet in our solar system, has its own moon, a dim little satellite called Gabrielle, its discoverers reported. Astronomers who reported Xena's discovery in July said they detected Xena's sidekick on September 10 using the Keck Observatory on Mauna Kea in Hawaii. Their findings will be submitted to the Astrophysical Journal Letters on Monday. "Since the day we discovered Xena, the big question has been whether or...

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2005-10-02 00:55:00

LOS ANGELES -- The astronomers who claim to have discovered the 10th planet in the solar system have another intriguing announcement: It has a moon. While observing the new, so-called planet from Hawaii last month, a team of astronomers led by Michael Brown of the California Institute of Technology spotted a faint object trailing next to it. Because it was moving, astronomers ruled it was a moon and not a background star, which is stationary. The moon discovery is important because it can...

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2005-09-10 09:38:31

Astrobiology Magazine -- When planetary scientists announced on July 29 that they had discovered a new planet larger than Pluto, the news overshadowed the two other objects the group had also found. But all three objects are odd additions to the solar system, and as such could revolutionize our understanding of how our part of the celestial neighborhood evolved. To the discoverers, the objects still go by the unofficial code-names "Santa," "Easterbunny," and "Xena," though they are...

2005-08-01 08:01:18

By Gina Keating LOS ANGELES (Reuters) - A California astronomer has discovered what he believes is the 10th planet in our solar system, a group of NASA-funded researchers said on Friday. The new planet, known as 2003UB313, has been identified as the most distant object ever detected orbiting the sun, California Institute of Technology astronomer Michael Brown said. Brown and colleagues Chad Trujillo and David Rabinowitz have submitted a name for the planet to the International...

2005-07-29 20:50:35

By Gina Keating LOS ANGELES (Reuters) - A California astronomer has discovered what he believes is the 10th planet in our solar system, a group of NASA-funded researchers said on Friday. The new planet, known as 2003UB313, has been identified as the most distant object ever detected orbiting the sun, California Institute of Technology astronomer Michael Brown said. Brown and colleagues Chad Trujillo and David Rabinowitz have submitted a name for the planet to the International...

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2005-04-15 16:25:50

Gemini -- Recent spectroscopic studies of infrared light reflected from the surface of Sedna reveal that it is probably unlike Pluto and Charon since Sedna's surface does not display evidence for a large amount of either water or methane ice. Due to Sedna's extreme distance from the Sun, the frigid surface has probably been untouched for millions of years by anything except cosmic rays and solar ultraviolet radiation. Gemini Observatory astronomer Chad Trujillo led an effort by the same...

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2005-02-01 07:05:00

The evolution of Kuiper Belt objects, Pluto and its lone moon Charon may have something in common with Earth and our single Moon: a giant impact in the distant past. Astrobiology Magazine -- The evolution of Kuiper Belt objects, Pluto and its lone moon Charon may have something in common with Earth and our single Moon: a giant impact in the distant past. Dr. Robin Canup, assistant director of Southwest Research Institute's (SwRI) Department of Space Studies, argues for such an origin for the...


Latest Eris Reference Libraries

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2004-10-19 04:45:41

Quaoar -- Quaoar ("kwah-oh-ahr", /kwA o Ar/) is a Trans-Neptunian object circling the Sun in the Kuiper belt, discovered in 2002 by astronomers Chad Trujillo and Mike Brown at the California Institute of Technology in Pasadena, California. Quaoar is estimated to have a diameter of about 1,280 kilometres, which would make it the largest Solar System object discovered since Pluto and, indeed, the largest known minor planet. Larger than all the asteroids put together, it is about one...

4_f6c7da539e4ce5858ae8aafa252e5d7e2
2004-10-19 04:45:41

Planet Charon -- Charon is the only known satellite of Pluto. Charon was discovered by astronomer James Christy in 1978 using photographic plates which showed a bulge moving around Pluto. Christy named it after the Greek mythological figure Charon but pronounced it differently. The "ch" at the beginning of the moon's name is soft so it sounds like "Sharon," after the astronomer's wife Charlene, nicknamed Char, which both have soft ch sounds. The mythological figure's name is...

4_d525afa47eb1598771cf4d0a9855c4d32
2004-10-19 04:45:41

Planet Pluto -- Pluto is the ninth and smallest planet of our solar system. It was discovered by the astronomer Clyde Tombaugh at the Lowell Observatory in Arizona on February 18, 1930 (although the body was first photographed on March 19, 1915). Tombaugh was searching for a "Planet X" to explain the orbit of Neptune; further analysis, with seven decades more data about Neptune's position, has resolved the perceived anomaly without need for an additional gravitational pull on Neptune....

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Word of the Day
cock-a-hoop
  • Exultant; jubilant; triumphant; on the high horse.
  • Tipsy; slightly intoxicated.
This word may come from the phrase 'to set cock on hoop,' or 'to drink festively.' Its origin otherwise is unclear. A theory, according to the Word Detective, is that it's a 'transliteration of the French phrase 'coq a huppe,' meaning a rooster displaying its crest ('huppe') in a pose of proud defiance.' Therefore, 'cock-a-hoop' would 'liken a drunken man to a boastful and aggressive rooster.'
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