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Habitable worlds may hide in gas giants' wake

29 October 2008

HABITABLE planets may be lurking in the wake of Jupiter-like planets as they orbit distant stars.

When a gas giant coalesces from the swirling nebula of gas and dust surrounding a young star, the planet’s gravity forms a wake ahead and behind it, concentrating enough matter there for it to clump together and form smaller, rocky planets like Earth. That’s according to simulations led by Wladimir Lyra of the Uppsala Astronomical Observatory in Sweden. Objects born in Jupiter’s wake may have merged to form the planet Saturn, which was then nudged into its current position by the gravity of other…

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