Difference between revisions of "February 8, 2005"
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<table width="85%" border="0" align="center" cellpadding="6" cellspacing="2"> | <table width="85%" border="0" align="center" cellpadding="6" cellspacing="2"> | ||
<tr><td colspan="2" valign="top"><div align="center"> | <tr><td colspan="2" valign="top"><div align="center"> | ||
| − | + | [[File:LPOD-2005-02-08.jpeg|LPOD-2005-02-08.jpeg]] | |
</div></td> | </div></td> | ||
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<table class="story" border="0" bgcolor="#FFFFFF" width="90%" cellpadding="10" align="center"><tr><td> | <table class="story" border="0" bgcolor="#FFFFFF" width="90%" cellpadding="10" align="center"><tr><td> | ||
<p align="center"><b>What's Happening at Aestuum? </b></p> | <p align="center"><b>What's Happening at Aestuum? </b></p> | ||
| − | <p align="left">East of Copernicus there is a cluster of 200-250 km wide roughly circular mare patches (Vaporum, Medii, and Aestuum) that presumably occupy degraded basins or craters. [ | + | <p align="left">East of Copernicus there is a cluster of 200-250 km wide roughly circular mare patches (Vaporum, Medii, and Aestuum) that presumably occupy degraded basins or craters. [[August_21,_2004|Mare Vaporum]] has the strongest hints of circular structure, but the east side of Sinus Aestuum (Bay of Billows, whatever that means) includes an arcuate series of mare ridges that is also suggestive of a possible inner ring. The area inside the braided mare ridge seems lower than the area outside it; perhaps the ridge traces a fault and the inner part of the Sinus has subsided. The area inside is also rougher, with many apparent small hills. But if you look at a higher res (but lower Sun) [http://www.lpi.usra.edu/resources/lunar_orbiter/bin/info.shtml?305 Lunar Orbiter IV] view, you'll see that the "hills" are really small craters. Many of these craters are Copernicus secondaries, which are younger than any of the Aestuum lavas, but the impression is that the lava within the mare ridges might be older than that in the surrounding moat. Getting back to the braided ridge - it contains at least two circular depressions that may simply be accidents of lighting and shallow topography, but suggest collapse pits, which are rare on mare ridges.</p> |
<blockquote><p align="right">— [mailto:tychocrater@yahoo.com Chuck Wood]</blockquote> | <blockquote><p align="right">— [mailto:tychocrater@yahoo.com Chuck Wood]</blockquote> | ||
<p align="left"><p><b>Technical Details:</b><br> | <p align="left"><p><b>Technical Details:</b><br> | ||
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[mailto:anthony@perseus.gr Anthony Ayiomamitis]</p> | [mailto:anthony@perseus.gr Anthony Ayiomamitis]</p> | ||
<p align="center" class="main_titles"><b>Contact Translator:</b><br> | <p align="center" class="main_titles"><b>Contact Translator:</b><br> | ||
| − | [mailto:pablolonnie@yahoo.com.mx | + | [mailto:pablolonnie@yahoo.com.mx Pablo Lonnie Pacheco Railey] (Es)<br> |
| − | [mailto:chlegrand@free.fr | + | [mailto:chlegrand@free.fr Christian Legrand] (Fr)</p> |
<p align="center" class="main_titles"><b>[mailto:webuser@observingthesky.org Contact Webmaster]</b></p> | <p align="center" class="main_titles"><b>[mailto:webuser@observingthesky.org Contact Webmaster]</b></p> | ||
<p align="center" class="main_titles"><b>A service of:</b><br> | <p align="center" class="main_titles"><b>A service of:</b><br> | ||
| − | [http://www.observingthesky.org/ | + | [http://www.observingthesky.org/ ObservingTheSky.Org]</p> |
<p align="center" class="main_titles"><b>Visit these other PODs:</b> <br> | <p align="center" class="main_titles"><b>Visit these other PODs:</b> <br> | ||
| − | [http://antwrp.gsfc.nasa.gov/apod/astropix.html | + | [http://antwrp.gsfc.nasa.gov/apod/astropix.html Astronomy] | [http://www.msss.com/ Mars] | [http://epod.usra.edu/ Earth]</p> |
</td></tr> | </td></tr> | ||
</table> | </table> | ||
Revision as of 15:29, 17 January 2015
What's Happening at Aestuum?
<nobr>What's Happening at Aestuum? </nobr> |
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Image Credit: K.C. Pau
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What's Happening at Aestuum? East of Copernicus there is a cluster of 200-250 km wide roughly circular mare patches (Vaporum, Medii, and Aestuum) that presumably occupy degraded basins or craters. Mare Vaporum has the strongest hints of circular structure, but the east side of Sinus Aestuum (Bay of Billows, whatever that means) includes an arcuate series of mare ridges that is also suggestive of a possible inner ring. The area inside the braided mare ridge seems lower than the area outside it; perhaps the ridge traces a fault and the inner part of the Sinus has subsided. The area inside is also rougher, with many apparent small hills. But if you look at a higher res (but lower Sun) Lunar Orbiter IV view, you'll see that the "hills" are really small craters. Many of these craters are Copernicus secondaries, which are younger than any of the Aestuum lavas, but the impression is that the lava within the mare ridges might be older than that in the surrounding moat. Getting back to the braided ridge - it contains at least two circular depressions that may simply be accidents of lighting and shallow topography, but suggest collapse pits, which are rare on mare ridges. Technical Details: Related Links: Tomorrow's LPOD: Lunar Postcard |
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Author & Editor: Technical Consultant: Contact Translator: A service of: |
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