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Complexity Digest 2008.33 - 18
http://comdig.unam.mx/index.php?id_issue=2008.33#30916
14-Aug-2008

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Astronomy: Planetary System Formation, Science
 









Excerpts: To date, 307 extrasolar planets have been discovered and 29
multipleplanet systems have been identified (1, 2). The masses of the planets
range from a few Earth masses up to several Jupiter masses, with orbital periods
ranging from slightly over 1 day to several years. Unlike in our solar system,
the orbital eccentricities of the extrasolar gas giant-sized planets may be
large.
Source: Astronomy: Planetary System Formation[
http://www.sciencemag.org/cgi/content/full/321/5890/777 ], J. C. B. Papaloizou,
Science : 777-778., 08/08/08

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