Earth's Moon is unusually rare.


	Earth's Moon is unusually rare.

willhelm

11-21-2007 12:58 AM

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earth, science, moon, space, universe

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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/cf122de6-e3c2-45fd-9e45-503776520b82/842CA832-6FBB-47C1-B8F6-2788AA2FD789/" 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://www.space.com/scienceastronomy/071120-moon-formation.html" href="http://www.space.com/scienceastronomy/071120-moon-formation.html" style="font-size: 11px;">www.space.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.space.com/scienceastronomy/071120-moon-formation.html"><P class="MsoNormal"><SPAN>The moon
formed after a nasty planetary collision with young Earth, yet it looks odd next
to its watery orbital neighbor. Turns out it really is odd: Only about one in
every 10 to 20 solar systems may harbor a similar moon.</SPAN></p> <P class="MsoNormal"><SPAN>New
observations made by NASA's <A href="http://www.space.com/php/multimedia/imagegallery/igviewer.php?gid=312&imgid=4371">Spitzer
Space Telescope</A> of stellar dust clouds suggest that moons like Earth's
are—at most—in only 5 to 10 percent of planetary systems.</SPAN></p> <P class="MsoNormal"><SPAN>"When
a moon forms from a violent collision, dust should be blasted everywhere,"
said Nadya Gorlova, an astronomer at the University of Florida in Gainesville who analyzed the telescope data in a new study. "If there were lots of
moons forming, we would have seen dust around lots of stars. But we
didn't."</SPAN></p> <P class="MsoNormal"><SPAN>Gorlova and
her team detail their findings in today's issue of the <I>Astrophysical Journal</I>.</SPAN></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/842CA832-6FBB-47C1-B8F6-2788AA2FD789/blog/" title="blog or email this clip"><img src="http://content9.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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