U.S. astronomers announced the discovery of the tenth planet.

<P> According to the Associated Press, "New York Times," NBC 30 reported that the solar system has nine planets to say now may have to be rewritten completely, the American astronomer 29, claimed that they found in the solar system .10th planet, </ P> <P> </ P> <P> it at 9 billion miles from the sun (145 billion km) away the edge of the area, the volume is even larger than Pluto. .American astronomers discovered the solar system, "Planet 10" statement has been supported by NASA, also caused a sensation around the world astronomical community. .</ P> <P> captured two years ago, "Planet 10" Photo </ P> <P> According to reports, local time 29, the Caltech astronomer Mike. .Brown and his colleagues in astronomy team, announced their more than 90 billion miles from the sun far edge of the area, the discovery of a celestial body larger than Pluto, Dr. Brown, who discovered the solar system "10 planets." .</ P> <P> According to reports, is the new planet, Dr. Brown, on January 8 this year, California Pa Luoma through the Observatory's Samuel. .Osborne piano telescope found, Professor Brown and his colleagues --- Gemini Observatory in Hawaii, scientists Chadwick. .Trudeau and Yale University, David Giraud. .Rabinovich and then found, as early as 2003, they had unwittingly been photographed this "10th planet" astronomical photos. .</ P> <P> size is 1.5 times that of Pluto </ P> <P> this "new planet" has not yet officially named, but temporarily known as "2003UB313", now it is about the distance from the sun .90 billion miles, which is the distance from the Sun and the Earth 97 times, or the distance of Pluto from the sun 3 times. .Last year, Professor Brown also claims that the science team for the first time discovered a named "Sedna," the distant objects in the new planet "2003UB313" was found before, "Sedna" in the solar system has been considered .The most distant objects. .</ P> <P> astronomers still do not know the specific size of the new planet, but its brightness and distance, according to projections, astronomers believe that the size of the new planet larger than Pluto will be absolute, and may even .Pluto is 1.5 times. .In addition, the composition of the planet Pluto is also very similar, both rock and ice above the surface, there may be methane. .</ P> <P> track is different from other planets </ P> <P> According to Dr. Brown said the new planet around the sun 560 years, a turn, it was not before astronomers discovered the reason why is because of its location .and the other planets in a solar system's orbital plane tilted 45 degrees angle of the plane, very few astronomers to the plane before the search for new objects. .</ P> <P> new planet's orbit is also different from any other solar system planets, and its unusual elliptical orbit farthest from the sun it can reach more than 90 million miles, and the last at the distance of only 3.3 billion .miles, (Pluto's orbit around the sun about 2.7 billion miles to 4.6 billion miles each). .Currently, the new planet is at the farthest place away from the Earth, but in 280 years, it would be like as close to Neptune. .</ P> <P> name being called "Zina" </ P> <P> Dr. Brown said, they have in mind for the new planet from the good name, but the formal approval of the International Astronomical Society .Before, they do not want to name the new planet made public. .In fact, astronomers have been informal and Brown, to call the new planet as "Zina" (Xena), this is a war on the Greek name of the Princess of the TV series, in 2000, when astronomers started to systematically .Search the solar system known stars, the drama is starting to pop. .Dr. Brown said: "We always want to name something as' Zina'。"</ P> <P> scientists announced the discovery of early forced </ P> <P> According to reports, Dr. Brown, where the group had astronomical .intend to wait until after the completion of all measurement study, finally published their findings, but did not expect a hacked their website for their research data, and threatened to publish the contents of the new planet to the public, only to force them to .change your mind, pre-announced their discoveries. .</ P> <P> Brown lost a bet 5 bottles of champagne </ P> <P> According to Dr. Brown, 5 and a half years ago, he and another friend Sabi Ni astronomers. .Yi Lu played Shang Hao 5 bottles of champagne a gamble in the gambling, he said he would before the end of last year, found one in the Kuiper belt objects larger than Pluto. .However, after the arrival of last December, Dr. Brown, but nothing, so he had to buy 5 bottles of champagne sent to Sabi Ni. .Yi Lu. .Unexpectedly, this Jan. 8, he found a "2003 UB313", Dr. Brown said: "I just found 8 days later because to lose this bet." </ P> <P> two days of "smoke" .three large objects </ P> <P> just the day before the July 28, a Spanish "Sierra Nevada Observatory," astronomer Jose. .Louis. .Ao Dizi led astronomy team claimed that they discovered a Kuiper Belt is also named "2003 EL61" the great object, they claim Fengyun objects greater than Pluto, but it turned out, "2003 EL61" size to .smaller than Pluto. .Brown's team also observed with the objects. .</ P> <P> In addition, Dr. Brown, the astronomical team also discovered another large Kuiper Belt objects: "2005 FY9". .</ P> <P> hidden in 1000 the solar system, "Pluto" </ P> <P> According to reports, the U.S. Southwest Research Institute astronomer, NASA "New Horizons program," senior scientist Alan. .Princeton had predicted, the edge of the solar system, Pluto-sized objects 1000 there, he also predicted based on computer models, in the farther corner of the solar system, with Mars and even Earth-sized objects exist. .In the 29th interview, Livingstone insisted that he believed in a few years time, scientists will be able to find the edge of the solar system Mars-sized objects. .</ P> <P> In addition, the University of California astronomer Eugene. .Jiang claimed that the planets in the solar system far more than the nine we know, they are larger than Mars, colder than Pluto. .</ P> </ p>.