Tuesday, December 21, 2010

Latest discovery: the youngest stars, planets around the sun run.

<P> Astronomers said they found the youngest planet around the sun-like star running to prove that planets formed in 1000 years, the dust disk is in the stellar wind and radiation to disperse before. .</ P> <P> </ P> <P> </ P> <P> computer graphics show that the newly discovered planets around young stars TW Hydrae its operation </ P> <P> </ P> <P .> newly discovered planets around young stars TW Hydrae its operation </ P> <P> According to Technology Channel [http://tech.] 2008 年 1 月 3 reported: Jan. 3 hearing, according to today's U.S. space network .reports, astronomers said they found the youngest planet around the sun-like stars work, this finding helps improve the planet formation theory. .</ P> <P> this about extrasolar planets 800-1000 years, but relative to the Earth, it is only a tottering toddler, because the earth is 4.5 billion years. .The researchers said that so far not found any operation around the sun like stars, planets less than 1 billion years. ."This means to search for planets around young stars, opened a new world," Carnegie Institute of Washington, planet formation theorist Alan Boss said, "so this is the first case, we hope that many of these planets." .Boss did not participate in the study. .</ P> <P> new planet is so young that it resides in its star's "protoplanetary disk", that is gas and dust around the star disk. .This planet is named TW Hya b. .The findings are published in the Jan. 3 issue of "Nature" magazine. .The researchers wrote, "This proves that planets formed in 1000 years that was stellar in the dust disk to disperse before the formation of wind and radiation." </ P> <P> new planet is 10 times the mass of Jupiter, from the .The star TW Hydrae 0.04 astronomical units, 1 astronomical unit is the distance from Earth to the sun. .The planet around its star running requires 3.56 days a week, the mother of 180 light years from Earth satellites. .Astronomers think the planet is in the star formation of gas and dust disk and found that this planetary scientists to know more information about planet formation. .German Max - Planck Institute of Astronomy staff enjoy the game too much about range, said: "This discovery shows that we have been talking about the original protoplanetary disk does have planets, they form planets. In a lot of young stars surrounded by protoplanetary .disk, but has not found such a young planet. "</ P> <P> Race Fan and his colleagues so by measuring the star of the rock to find the planet because the planet's gravitational pull the unruly home .stars. .This is called the radial velocity measurements is the discovery of planets outside our solar system a good way to <P> </ P> </ p>.

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