Recent discoveries in modeling suggest that Jupiter size planets are lucky survivors of a much faster process. Survival is almost rare as these would be Jupiter's and Saturn's have only a few million years to grab all they can and many Jupiter like planets either bounce out of the solar system or plunge into the parents sons because of complex gravitation

This theory, created in 1951 by Gerard Kuiper, and refined by Al Cameron in 1970, suggested gas in a merely uniformed disk would abruptly become unstable and contract rapidly compressing into clumps forming spheres. "The disk-instability model fell into complete disrepute," says Boss as no one could reconcile rocky cores with a collapsing clump of gases. In the mid-80s astronomers found that young stars lose their discs after only a few million years. In its simplest form core-accretion could take billions of years.

These findings prompted many astronomers to think that core accretion might not be the correct way to go. However, disk instability models cannot rule out core accretion. Neither is mutually exclusive and one or both could be true. The one thing everyone does agree on is there is a need for more data and surveys of clusters of young stars. There'

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Approximate Word count = 585
Approximate Pages = 2 (250 words per page double spaced)