Astronomy on MSN
The sky this week from December 12 to 19: The Geminids peak
Sky This Week is brought to you in part by Celestron. Friday, December 12Ganymede reappears from occultation behind Jupiter ...
Space.com on MSN
A spider-like scar haunts Jupiter's moon Europa — and scientists think they know why
Images from NASA's Galileo mission reveal a tantalizing starburst-like feature. Scientists call it a "wall demon." ...
There are two small moons in orbit around Mars today, but both may be remnants of a much larger moon that had enough of a gravitational pull to drive tides in the Red Planet's lost lakes and seas ...
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