Difference between revisions of "December 29, 2012"
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<td><em>image by [mailto:javi.berna@outlook.com Javi Berna], Spain, and LRO QuickMap profile (below)</em><br /> | <td><em>image by [mailto:javi.berna@outlook.com Javi Berna], Spain, and LRO QuickMap profile (below)</em><br /> | ||
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| − | Pythagoras is a larger version of Copernicus - 130 km in diameter and about 5 km deep, compared to 93 km and 3.8 km. Surprisingly, it's tallest central peaks are higher than at least some of the surrounding terrain, violating [ | + | Pythagoras is a larger version of Copernicus - 130 km in diameter and about 5 km deep, compared to 93 km and 3.8 km. Surprisingly, it's tallest central peaks are higher than at least some of the surrounding terrain, violating [[February_12,_2007|seen]] at full Moon. Its greater age is also indicated by the lack of original surface roughness on impact melts to the north and perched on inner wall terraces, when examined with LRO images. In fact, the older age of Pythagoras was recognized during the Apollo era when it was mapped as about the same age as older Imbrium lavas. One thing the old timers didn't know is that the central peaks of Pythagoras, like those of nearby Anaxagoras, Philolaus and Carpenter, contain pure anorthosite, remnants of the magma ocean.<br /> |
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<em>[mailto:tychocrater@yahoo.com Chuck Wood]</em><br /> | <em>[mailto:tychocrater@yahoo.com Chuck Wood]</em><br /> | ||
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<em>[http://lpod.wikispaces.com/21st+Century+Atlas+of+the+Moon 21st Century Atlas]</em> charts 20 & L7.<br /> | <em>[http://lpod.wikispaces.com/21st+Century+Atlas+of+the+Moon 21st Century Atlas]</em> charts 20 & L7.<br /> | ||
Javi Berna's [http://www.37gradosnorte.blogspot.com website]<br /> | Javi Berna's [http://www.37gradosnorte.blogspot.com website]<br /> | ||
| − | An earlier, more profile-like [ | + | An earlier, more profile-like [[October_9,_2007|view]] of Pythagoras.<br /> |
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<p><b>Yesterday's LPOD:</b> [[December 28, 2012|Missing Rays]] </p> | <p><b>Yesterday's LPOD:</b> [[December 28, 2012|Missing Rays]] </p> | ||
Revision as of 23:28, 22 March 2015
Catching Up with Pythagoras
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image by Javi Berna, Spain, and LRO QuickMap profile (below)
Yesterday's LPOD: Missing Rays Tomorrow's LPOD: Lost Inspirations
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