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| | =A Little Basin= | | =A Little Basin= |
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| | + | <div class="post" id="post-735"> |
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| + | <p>[[File:Bailly_lammell.jpg|bailly_lammell.jpg]]</p> |
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| − | <p>[[File:Bailly_lammell.jpg|bailly_lammell.jpg]]</p> | |
| | <p><em>image by [mailto:slamm@blueyonder.co.uk Stefan Lammel], Uxbridge, England</em></p> | | <p><em>image by [mailto:slamm@blueyonder.co.uk Stefan Lammel], Uxbridge, England</em></p> |
| | <p>A big crater or a little basin? Bailly is a famous large (303 km) feature on the Moon’s southwest limb that is readily seen when lighting and librations are favorable. But beyond identifying it, have you studied it? Bailly lacks a central peak, but does have a series of low hills that suggest an inner ring. In impact cratering, as the energy of impact increases beyond a level that creates craters 200-300 km wide, the central peak is transformed into a low scraggily ring of hills. Bailly is an example of the onset of such a peak-ring morphology of impact basins. Although they are fairly common on Mars and Mercury, there aren’t many peak-ring basins on the Moon. Bailly is also rather old - its rim and floor are littered with many later random (and Orientale secondary) impact craters. Bailly is a an old feature, but it is not a [http://en.wikipedia.org/wiki/Bailly_(crater) walled-plain], nor is it a just a big, battered old crater.</p> | | <p>A big crater or a little basin? Bailly is a famous large (303 km) feature on the Moon’s southwest limb that is readily seen when lighting and librations are favorable. But beyond identifying it, have you studied it? Bailly lacks a central peak, but does have a series of low hills that suggest an inner ring. In impact cratering, as the energy of impact increases beyond a level that creates craters 200-300 km wide, the central peak is transformed into a low scraggily ring of hills. Bailly is an example of the onset of such a peak-ring morphology of impact basins. Although they are fairly common on Mars and Mercury, there aren’t many peak-ring basins on the Moon. Bailly is also rather old - its rim and floor are littered with many later random (and Orientale secondary) impact craters. Bailly is a an old feature, but it is not a [http://en.wikipedia.org/wiki/Bailly_(crater) walled-plain], nor is it a just a big, battered old crater.</p> |
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| | Rükl chart 71<br /> | | Rükl chart 71<br /> |
| | [http://www.lpi.usra.edu/resources/lunar_orbiter/bin/info.shtml?501 An overhead view]<br /> | | [http://www.lpi.usra.edu/resources/lunar_orbiter/bin/info.shtml?501 An overhead view]<br /> |
| − | [http://www.slamm.pwp.blueyonder.co.uk/moon/moon.htm Stefan’s website]<a /a></a></p> | + | [http://www.slamm.pwp.blueyonder.co.uk/moon/moon.htm Stefan’s website]</p> |
| − | <p><i>I have just restored the recommended book list. Now you can support LPOD when you buy a lunar book or ANY book [Xmas is coming!] from Amazon thru [[LPOD]]</i></p> | + | <p><b>Yesterday's LPOD:</b> [[November 23, 2006|Happy Thanksgiving!]] </p> |
| − | </div>
| + | <p><b>Tomorrow's LPOD:</b> [[November 25, 2006|A Cloudy Night Read]] </p> |
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| − | ---- | + | <!-- End of content --> |
| − | ===COMMENTS?===
| + | {{wiki/ArticleFooter}} |
| − | Click on this icon [[image:PostIcon.jpg]] at the upper right to post a comment.
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