<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/88f4f746-a919-491f-8ecf-7efbf83a54dd/7071CCEC-0AC6-4287-B967-77AF3BD48ED6/" 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://blogs.discovermagazine.com/badastronomy/2009/08/20/two-moons-circling/" href="http://blogs.discovermagazine.com/badastronomy/2009/08/20/two-moons-circling/" style="font-size: 11px;">blogs.discovermagazine.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://blogs.discovermagazine.com/badastronomy/2009/08/20/two-moons-circling/">All the planets in the solar system orbit the Sun roughly in the same plane</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://blogs.discovermagazine.com/badastronomy/2009/08/20/two-moons-circling/">from the side, the orbits of the planets would all be very close to falling on the same line</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://blogs.discovermagazine.com/badastronomy/2009/08/20/two-moons-circling/">As it happens, Jupiter’s poles are almost perfectly perpendicular to the line. In other words, its equator lines up with the plane of the solar system</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://blogs.discovermagazine.com/badastronomy/2009/08/20/two-moons-circling/">and its big moons also orbit the planet right above the equator. </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://blogs.discovermagazine.com/badastronomy/2009/08/20/two-moons-circling/">when we look at Jupiter, the moons appear to orbit the giant planet on a line, too</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://blogs.discovermagazine.com/badastronomy/2009/08/20/two-moons-circling/"> if you watch Jupiter for long enough you’ll certainly see a moon pass directly over the planet’s face, and sometimes you can see the moon’s shadow as well</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://blogs.discovermagazine.com/badastronomy/2009/08/20/two-moons-circling/"><P>It’s much less common to catch the shadow of one moon falling on another; the moons are small and it’s a rare thing to see such an event. But amateur astronomer <A target="_blank" href="http://jupiter.cstoneind.com/">Christopher Go caught exactly that</A> on August 16, 2009: the shadow of the moon Io going right over the moon Ganymede.</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://blogs.discovermagazine.com/badastronomy/2009/08/20/two-moons-circling/"><div align="center"><img src="http://content9.clipmarks.com/blog_cache/blogs.discovermagazine.com/img/0890D4C8-76B0-4131-BE6A-634B9CC58CD0" alt="animation of transit of Io and Ganymede" /></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://blogs.discovermagazine.com/badastronomy/2009/08/20/two-moons-circling/"><P>That. Is. So. Cool. </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://blogs.discovermagazine.com/badastronomy/2009/08/20/two-moons-circling/">look at Ganymede: you can see surface features! </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://blogs.discovermagazine.com/badastronomy/2009/08/20/two-moons-circling/">amazing that we can see things like this</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/7071CCEC-0AC6-4287-B967-77AF3BD48ED6/blog/" title="blog or email this clip"><img src="http://content6.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>

New from the makers of Clipmarks:  Amplify.com - Don't just share the news...Amplify it!