"Astronomers discover deep valley on Mercury formed..." Topic
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| Tango01 | 24 Nov 2016 8:48 p.m. PST |
…through Earth-like processes. "The valley is believed to be 250 miles (400 kilometers) wide, 600 miles (1,000 kilometers) long, and about 2 miles (3 kilometers) deep — huge by any standards. Researchers believe it was created due to contraction. As Mercury's interior cooled down, it caused one part of its surface to bend and ultimately break. Astronomers and geologists created the map by analyzing a high-resolution map of Mercury's southern hemisphere, made from images taken by NASA's MESSENGER spacecraft. The valley is flanked by two large fault scarps, somewhat similar to how the Eastern African rift looks like. But while the rift was formed by tectonic plate movement, this valley was created by completely different forces…"
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| tkdguy | 24 Nov 2016 11:57 p.m. PST |
I didn't know MESSENGER was still active. Good to know it is. |
 Saber6  | 25 Nov 2016 8:29 a.m. PST |
MESSEGER is not active. It had a "death spiral" into Mercury a couple years ago. Still LOTS of data to sift through though. |
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