Difference between revisions of "December 4, 2009"
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| − | <em>north to left [http://lpod.org/coppermine/displayimage.php?pos=-4350 image] by [mailto:HowardEskildsen@msn.com Howard Eskildsen]</em><br /> | + | <em>north to left [http://lpod.org/coppermine/displayimage.php?pos=-4350" rel="nofollow image] by [mailto:HowardEskildsen@msn.com" rel="nofollow Howard Eskildsen]</em><br /> |
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| − | We don't understand rays well enough. Back in 1960 Shoemaker showed that they were ejecta from impact craters, and sometime in the 90s B. Ray Hawke and his colleagues recognized that rays could have two components, freshly pulverized rocks and bright highland rocks. So we know something about their emplacement and composition. But their shapes and lengths and even their non-radiality are not well understood. The rays emanating from the two little [http://www.lpod.org/?m=20061008 craters] on either side of Stevinus are good examples. First, these rays seem to be very long for the small diameters (8 and 12 km) of their source craters. Second, note the broad rays to their north (left) that are not all radial to them - how exactly, do non-radial rays form? And, as we've commented before. the shapes of rays have never been studied and classified. Who will be a champion ray researcher?<br /> | + | We don't understand rays well enough. Back in 1960 Shoemaker showed that they were ejecta from impact craters, and sometime in the 90s B. Ray Hawke and his colleagues recognized that rays could have two components, freshly pulverized rocks and bright highland rocks. So we know something about their emplacement and composition. But their shapes and lengths and even their non-radiality are not well understood. The rays emanating from the two little [http://www.lpod.org/?m=20061008" rel="nofollow craters] on either side of Stevinus are good examples. First, these rays seem to be very long for the small diameters (8 and 12 km) of their source craters. Second, note the broad rays to their north (left) that are not all radial to them - how exactly, do non-radial rays form? And, as we've commented before. the shapes of rays have never been studied and classified. Who will be a champion ray researcher?<br /> |
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| − | <em>[mailto:tychocrater@yahoo.com Chuck Wood]</em><br /> | + | <em>[mailto:tychocrater@yahoo.com" rel="nofollow Chuck Wood]</em><br /> |
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<strong>Technical Details</strong><br /> | <strong>Technical Details</strong><br /> | ||
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| − | <div>You can support LPOD when you buy any book from Amazon thru [http://www.lpod.org/?page_id=591 LPOD!]<br /> | + | <div>You can support LPOD when you buy any book from Amazon thru [http://www.lpod.org/?page_id=591" rel="nofollow LPOD!]<br /> |
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===COMMENTS?=== | ===COMMENTS?=== | ||
Click on this icon [[image:PostIcon.jpg]] at the upper right to post a comment. | Click on this icon [[image:PostIcon.jpg]] at the upper right to post a comment. | ||
Revision as of 18:15, 4 January 2015
Rayology
north to left " rel="nofollow image by " rel="nofollow Howard Eskildsen
We don't understand rays well enough. Back in 1960 Shoemaker showed that they were ejecta from impact craters, and sometime in the 90s B. Ray Hawke and his colleagues recognized that rays could have two components, freshly pulverized rocks and bright highland rocks. So we know something about their emplacement and composition. But their shapes and lengths and even their non-radiality are not well understood. The rays emanating from the two little " rel="nofollow craters on either side of Stevinus are good examples. First, these rays seem to be very long for the small diameters (8 and 12 km) of their source craters. Second, note the broad rays to their north (left) that are not all radial to them - how exactly, do non-radial rays form? And, as we've commented before. the shapes of rays have never been studied and classified. Who will be a champion ray researcher?
" rel="nofollow Chuck Wood
Technical Details
11/30/2009; 02:08 UT. Meade 6", f/8 Refractor + DMK 41AU02.AS, 2-image composite
Related Links
Rükl plates 59 & 69
COMMENTS?
Click on this icon File:PostIcon.jpg at the upper right to post a comment.
