Vote Now! Top Space Stories of the Week - Jan. 6, 2013

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100 Billion Alien Planets Fill Our Milky Way Galaxy: Study

PHL @ UPR Arecibo, ESA/Hubble, NASA

There are at least 100 billion planets in our Milky Way galaxy, according to a new study. [Full Story]

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Space.com is the premier source of space exploration, innovation and astronomy news, chronicling (and celebrating) humanity's ongoing expansion across the final frontier. Originally founded in 1999, Space.com is, and always has been, the passion of writers and editors who are space fans and also trained journalists. Our current news team consists of Editor-in-Chief Tariq Malik; Editor Hanneke Weitering, Senior Space Writer Mike Wall; Senior Writer Meghan Bartels; Senior Writer Chelsea Gohd, Senior Writer Tereza Pultarova and Staff Writer Alexander Cox, focusing on e-commerce. Senior Producer Steve Spaleta oversees our space videos, with Diana Whitcroft as our Social Media Editor.