<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/6e486598-7b5a-4be1-bb5d-129a27d8c774/C2314271-4D78-4B50-BC65-E87E21B07711/" 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://antwrp.gsfc.nasa.gov/apod/ap090801.html" href="http://antwrp.gsfc.nasa.gov/apod/ap090801.html" style="font-size: 11px;">antwrp.gsfc.nasa.gov</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://antwrp.gsfc.nasa.gov/apod/ap090801.html"><div align="center"><img src="http://content7.clipmarks.com/blog_cache/antwrp.gsfc.nasa.gov/img/4959FC6B-B663-46F6-89DE-3A8F328FD64A" alt="See Explanation. Clicking on the picture will download the highest resolution version available." /></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://antwrp.gsfc.nasa.gov/apod/ap090801.html">A new star, likely the brightest supernova in recorded human history, lit up planet <A href="http://antwrp.gsfc.nasa.gov/apod/ap060430.html">Earth's sky</A> in the year 1006 AD. The expanding debris cloud from the stellar explosion, found in the southerly constellation <A href="http://www.seasky.org/pictures/sky7b06.html#Lupus">of Lupus</A>, still puts on a cosmic light show across the <A href="http://hyperphysics.phy-astr.gsu.edu/hbase/ ems1.html">electromagnetic</A> spectrum. In fact, <A href="http://chandra.harvard.edu/photo/2008/sn1006c/">this composite view</A> includes X-ray data in blue from the <A href="http://chandra.harvard.edu/index.html">Chandra Observatory</A>, optical data in yellowish hues, and radio image data in red. Now known as the SN 1006 <A href="http://imagine.gsfc.nasa.gov/docs/science/know_l2/ supernova_remnants.html">supernova remnant</A>, the debris cloud appears to be about 60 light-years across and is understood to represent the remains of a white dwarf star. Part of a <A href="http://antwrp.gsfc.nasa.gov/apod/ap060521.html">binary star system</A>, the compact white dwarf gradually captured material from its companion star. The buildup in mass finally triggered a <A href="http://arxiv.org/abs/astro-ph/0611776">thermonuclear</A> explosion that destroyed the dwarf star. Because the distance to the supernova remnant is about 7,000 <A href="http://chandra.harvard.edu/photo/ cosmic_lookback.html">light-years</A>, that explosion actually happened 7,000 years before the light reached Earth in 1006</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/C2314271-4D78-4B50-BC65-E87E21B07711/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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