Difference between revisions of "December 9, 2004"
Line 45: | Line 45: | ||
[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 18:41, 11 January 2015
A Long Valley
<nobr>A Long Valley</nobr> |
["#" onMouseOver = "document.images['main_image'].src='archive/2004/12/images/LPOD-2004-12-09b.jpeg'; return true" onMouseOut = "document.images['main_image'].src='archive/2004/12/images/LPOD-2004-12-09.jpeg'; return false" <img src="archive/2004/12/images/LPOD-2004-12-09.jpeg" name="main_image" border="0" id="main_image">] |
Image Credit: Paolo Lazzarotti
|
A Long Valley Along the southern shore of Mare Nubium is a long rille that might initially be thought of as basin-concentric, like those rilles along the edges of southern Mare Serenitatis. But the Hesiodus Rille is not well behaved - instead of staying within the putative rim of the Nubium basin, it strikes across the basin's ill-defined rim (the ridge NW of Weiss) and heads into Palus Epidemiarum (see mouseover). Every lunar feature exists because of either chance (impact craters) or control by tectonics or topography. But this rille pays no heed to topography - cutting through the ridge in the center of the scene - and there is no obvious tectonic control. Unlike many of the linear rilles west of Procellarum, the Hesiodus Rille is not radial to the Procellarum/Gargantuan impact basin. So this fine image beautifully illustrates the rille, but doesn't help us (at least me) explain why it is there. Technical Details: Related Links: Tomorrow's LPOD: Overlooked Secondaries |
Author & Editor: Technical Consultant: Contact Translator: A service of: |
COMMENTS?
Register, and click on the Discussion tab at the top of the page.