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Quasar tests general relativity to the limit
dewitte
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1
4-18-2008 8:54 PM
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tags:
quasar
,
gravity
,
einstein
,
black hole
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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/3c2323f2-616f-45cf-b3db-f3f8e081414d/3627A787-B34B-4C54-8F0F-DBB96335A05B/" 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://physicsworld.com/cws/article/news/33818" href="http://physicsworld.com/cws/article/news/33818" style="font-size: 11px;">physicsworld.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://physicsworld.com/cws/article/news/33818"><P>Astronomers have obtained the most compelling evidence yet that massive objects dramatically warp space–time, as predicted by Einstein's general theory of relativity. Although the geometric nature of gravity was first demonstrated in 1919, when Arthur Eddington famously detected the subtle warping effect of the Sun on the light from distant stars, the new results provide the first test of Einstein's theory in much stronger gravitational fields. </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://physicsworld.com/cws/article/news/33818"><div align="center"><img src="http://content8.clipmarks.com/blog_cache/physicsworld.com/img/189C3469-F2FA-4C0D-B9B4-9FCFB23FE1CA" alt="quasar" /></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://physicsworld.com/cws/article/news/33818"><P>In fact, team leader <A href="http://www.astro.utu.fi/tuorla/new/staff/index.cgi?MauriValtonen"">Mauri Valtonen</A> of Tuorla Observatory in Finland claims the work provides the first hard evidence for black holes, which are so massive that space–time is predicted to completely curve in on itself: "People refer to the concept of black holes all the time, but strictly speaking one first has to prove that general relativity holds in strong gravitational fields before we can be sure that black holes exist," he told <CITE>physicsworld.com</CITE>. </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;"> </td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/3627A787-B34B-4C54-8F0F-DBB96335A05B/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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