Catching planets in the making

For many years, astronomers have had a clear, though ever-evolving, picture of how planets are born. It starts with a disk of dust swirling around a newborn star, and then gradually the dust particles stick together to form ever-larger pieces--grains, pebbles, boulders, protoplanets and ultimately planets.

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<p><a href="http://www.physorg.com/news126794742.html">Catching planets in the making</a></p> <p>For many years, astronomers have had a clear, though ever-evolving, picture of how planets are born. It starts with a disk of dust swirling around a newborn star, and then gradually the dust particles stick together to form ever-larger pieces--grains, pebbles, boulders, protoplanets and ultimately planets.</p>