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December 03, 2011

New Jupiter-size alien planets

The astronomers found the new planets by looking for stars that "wobble" under gravitational tug of an orbiting planet.The 18 Jupiter-size planets were found by searching the "wobbling" stars' spectra for Doppler shifts which are lengthening and contracting of wavelengths due to motion away or toward the observer. The new finds, according to the researchers, represent a 50 percent increase in the number of planets that have been found in the orbit of massive stars. The finds are important because they aid understanding of how planets form. The researchers also say the new findings support the core accretion theory that planets arise from seed particles that clump gas and dust in disks surrounding newborn stars. The core accretion theory predicts that stellar mass will have a relationship to planet size and number in a planetary system


Posted by hanwen at December 3, 2011 11:23 PM


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