We think the whole [fat Jupiter] system has recently been disturbed by some violent gravitational interaction, though we're not sure exactly what happened, something recently happened that kicked it out.

Paul Kalas

Paul Kalas is a Greek American astronomer known for his discoveries of debris disks around stars. Kalas led a team of scientists to obtain the first visible-light images of an extrasolar planet with orbital motion around the star Fomalhaut, at a distance of 25 light years from Earth. The planet is referred to as Fomalhaut b.

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