Pluto-Sized Objects Swarm Teenage, Sun-like Star

December 12, 2014 11:58 AM

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Astronomers have spotted an entire family of Pluto-sized objects with the help of ALMA. The tiny worlds which are swarming around an adolescent version of our own sun, may tell researchers a bit more about the evolution of solar systems.

In this case, the scientists made detailed observations of the protoplanetary disk surrounding a star known as HD 107146. They spotted an unexpected increase in the concentration of millimeter-size dust grains in the disk's outer reaches. This increase, which begins remarkably far from the host star...

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