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[ link to physicsworld.com (secure)] Astronomers see first evidence of a new planet being born
A distinctive twist in the disk of gas and dust surrounding a newly formed star likely indicates that a new planet is currently forming in the system. This discovery by researchers in France, Belgium, USA and Taiwan, led by Anthony Boccaletti at PSL University’s Paris Observatory, makes them the first astronomers to witness such an event.
For the first few million years of their lives, newly born stars are surrounded by dense disks of gas and dust. These structures don’t stay around for long; driven by gravitational instabilities, they will quickly collapse under their own gravity to form new planets. Astronomers are now well aware of this process, but the precise mechanisms that unfold as it occurs have so far remained far from certain.
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