Seeing the Unseeable

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	Seeing the Unseeable

LorisKnight

8-29-2007 3:54 PM

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science

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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/31c57d08-bfe5-41db-9d6a-bd16a207eb47/70A6E675-D59D-4B1A-B073-3AEFBD1DE306/" 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.seedmagazine.com/news/2007/08/seeing_the_unseeable_1.php" href="http://www.seedmagazine.com/news/2007/08/seeing_the_unseeable_1.php" style="font-size: 11px;">www.seedmagazine.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.seedmagazine.com/news/2007/08/seeing_the_unseeable_1.php"><div align="center"><img src="http://content7.clipmarks.com/blog_cache/www.seedmagazine.com/img/397A0339-5C3C-451E-B101-1EC35DA29ACF" alt="" /></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://www.seedmagazine.com/news/2007/08/seeing_the_unseeable_1.php"><P>Within the confines of the ordinary, vision is the most reliable tool we have. But some of the most extraordinary parts of nature, those that lie at the frontiers of science, can't be seen at all. Dark matter, for example, the invisible, mysterious material that makes up 22 percent of the stuff in the universe, is one of the great scientific unknowns, a substance nearly six times as abundant as ordinary matter but made up of fundamental particles we haven't yet identified. And dark matter doesn't emit light, it doesn't reflect light, and it doesn't absorb light. It's not dark, as the name suggests—dark matter is completely, inherently unseeable.</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://www.seedmagazine.com/news/2007/08/seeing_the_unseeable_1.php">While we are unable to see dark matter itself, we are able to create maps of it, pinpointing
its location by observing the effects of its mass on light from distant galaxies.</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://www.seedmagazine.com/news/2007/08/seeing_the_unseeable_1.php">Einstein's general theory of relativity predicts that a massive object will curve the fabric of space, and light will follow this deformed path.</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/70A6E675-D59D-4B1A-B073-3AEFBD1DE306/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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