Vote Now! Top Space Stories of the Week - Jan. 22, 2012

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Tiny Invisible Galaxy May Be Made Completely of Dark Matter

Vegetti et al.

Astronomers have discovered a whole dwarf galaxy made of invisible dark matter that is only detectable through its gravitational force. [Full Story]

NEXT: Mystery Surrounds Air Force's Secretive X-37B Space Plane Landing Plan

Mystery Surrounds Air Force's Secretive X-37B Space Plane Landing Plan

USAF/Vandenberg Air Force Base

The U.S. military's secret X-37B space plane is still circling Earth, nearly 10 months after its launch. When might it come down? [Full Story]

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Space.com Staff
Space.com Staff
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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.