Moon Casts Shadow on Saturn Ring


	Moon Casts Shadow on Saturn Ring

tabsey

6-14-2009 8:52 AM

192 views

tags:

astronomy

tabsey says:

Moons are embedded in the rings. That is new.

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/23cbe491-4968-4ba3-b89f-e2ff45dba1fb/190750E4-B3A6-4771-857B-E76617B9B819/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://dsc.discovery.com/news/2009/06/12/saturn-ring-shadow.html" href="http://dsc.discovery.com/news/2009/06/12/saturn-ring-shadow.html" style="font-size: 11px;">dsc.discovery.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://dsc.discovery.com/news/2009/06/12/saturn-ring-shadow.html"><P><STRONG>June 12, 2009</STRONG> -- Tiny <A target="_blank" href="http://dsc.discovery.com/news/2008/09/05/saturn-moon-ring.html">moons embedded in Saturn's ring</A> system create gravitational speed bumps that redirect the flow of particles in the otherwise flat rings, new findings from the <A target="_blank" href="http://www.nasa.gov/mission_pages/cassini/main/index.html">Cassini spacecraft</A> show.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://dsc.discovery.com/news/2009/06/12/saturn-ring-shadow.html"><P>Taking advantage of a very low sun angle relative to the planet's rings, Cassini scientists found long shadows in a ring gap created by the five-mile-wide Saturn moon Dephnis, which orbits in Saturn's outer A ring. </P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://dsc.discovery.com/news/2009/06/12/saturn-ring-shadow.html"><div align="center"><img src="http://content7.clipmarks.com/blog_cache/dsc.discovery.com/img/7C0F2A87-6B98-4252-86B5-B6971319AB74" alt=" Moon Shadows" /></div></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://dsc.discovery.com/news/2009/06/12/saturn-ring-shadow.html"><DIV class="standardWidgetPadding">Moon Shadows | <A target="_blank" href="http://dsc.discovery.com/videos/discovery-news/?">Discovery News Video</A></DIV></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://dsc.discovery.com/news/2009/06/12/saturn-ring-shadow.html"><P>Extrapolating from the results, the team determined the moon was creating a vertical structure about one mile in height -- about 150 times as high as the rings are thick.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://dsc.discovery.com/news/2009/06/12/saturn-ring-shadow.html"><P>The planet's three main rings are about 30 feet thick.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://dsc.discovery.com/news/2009/06/12/saturn-ring-shadow.html"><P>Scientists had predicted that gravitational forces associated with embedded moons would create vertical structures as they dip above and below the ring plane, but they've never before observed it.</P></blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/190750E4-B3A6-4771-857B-E76617B9B819/blog/" title="blog or email this clip"><img src="http://content8.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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