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WEDNESDAY, NOVEMBER 25, 2009
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Mercury 'Spider Crater' Spotted

Probe reveals never-before-seen side of Mercury

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(Newser) – NASA's first probe to Mercury in more than 30 years has made some spectacular finds, including a mysterious new crater dubbed "the spider," Space.com reports. The network of cracks radiating from the impact crater photographed by the probe is like nothing else ever seen in the solar system. "Our little craft has returned a gold mine of exciting data," said the chief scientist.

The Messenger probe has photographed much of the 55% of the planet scientists have never seen before, and gathered data on the planet's puzzling magnetic field. Experts now think they have evidence of volcanic activity on Mercury. "I've waited 30 years for this. It didn't disappoint," said a team member. The tiny probe will pass Mercury again later this year.

This image provided by NASA shows the planet Mercury in a Monday, Jan. 14, 2008 picture made by the Messenger spacecraft at a distance of approximately 17,000 miles following the spacecraft's closest approach to Mercury. On the upper right is the giant Caloris basin, including its western portions never...
This image provided by NASA shows the planet Mercury in a Monday, Jan. 14, 2008 picture made by the Messenger spacecraft at a distance of approximately 17,000 miles following the spacecraft's closest...   (Associated Press)
This image provided by NASA, Wednesday, Jan. 30, 2008, shows shows the historic first look at the previously unseen side of Mercury taken by the MESSENGER spacecraft. This image shows a closer view of much of that territory. Just above and to the left of center of this image is...
This image provided by NASA, Wednesday, Jan. 30, 2008, shows shows the historic first look at the previously unseen side of Mercury taken by the MESSENGER spacecraft. This image shows a closer view of...   (Associated Press)
A high-resolution image taken during the Mercury flyby encounter on Jan. 14, 2008. This frame shows a region of Mercury's surface previously unseen by spacecraft and a large scarp crossing vertically through the scene, on the far right of the image. This scarp is the northern continuation of the one...
A high-resolution image taken during the Mercury flyby encounter on Jan. 14, 2008. This frame shows a region of Mercury's surface previously unseen by spacecraft and a large scarp crossing vertically...   (Associated Press)
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