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Science 29 November 2002:
Vol. 298. no. 5599, p. 1675
DOI: 10.1126/science.298.5599.1675b
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This Week in Science

To date, the detection of about 100 giant gaseous planets orbiting nearby stars would suggest that such planets are relatively common. However, simulations that try to account for their formation often run into difficulties in condensing the objects or, once they have formed, of not shearing them apart through tidal forces. Mayer et al. (p. 1756; see the news story by Kerr) have now performed higher resolution smoothed-particle hydrodynamic simulations to show that giant planets can form through gravitational instabilities in relatively cool protoplanetary disks over short time scales (about 1000 years).




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Science. ISSN 0036-8075 (print), 1095-9203 (online)