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The outer diameter of the large double ring crater at the center of the scene is about 260 km (about 160 miles). The crater appears to be filled with smooth plains material that may be volcanic in nature. Multiple chains of smaller secondary craters are also seen extending radially outward from the double ring crater. Double or multiple rings form in craters with very large diameters, often referred to as impact basins. On Mercury, double ring basins begin to form when the crater diameter exceeds about 200 km (about 125 miles); at such an onset diameter the inner rings are typically low, partial, or discontinuous. The transition diameter at which craters begin to form rings is not the same on all bodies and, although it depends primarily on the surface gravity of the planet or moon, the transition diameter can also reveal important information about the physical characteristics of surface materials. Studying impact craters, such as this one, in the more than 1200 images returned from this flyby will provide clues to the physical properties of Mercury's surface and its geological history.
Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington
Originally posted by olegkvasha
off topic a bit .... look how dented the apollo 16 LM was ....
Originally posted by kinda kurious
reply to post by mikesingh
Wow Mike. You are amazing. I think you can see things only dogs can hear. I didn't even notice. Nice catch.
( BTW, I'm still in awe over the Mars "spool" artifact. Learned all about the Russian rovers thanks to you.)
I suspect you and Oleg are both "11" on a 1 to 10 scale with these finds.
( My grass certainly ain't gettin' mowed this weekend.)