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<div class="moz-cite-prefix">On 27/09/2012 01:42, spike wrote:<br>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Oh man, this is soooo cool, what a time to
be alive:<o:p></o:p></p>
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<p class="MsoNormal"><a moz-do-not-send="true"
href="http://blogs.discovermagazine.com/badastronomy/2012/09/25/revealing-the-universe-the-hubble-extreme-deep-field/">http://blogs.discovermagazine.com/badastronomy/2012/09/25/revealing-the-universe-the-hubble-extreme-deep-field/</a><o:p></o:p></p>
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<br>
And then there is this paper showing that the accretion disk of M87
rotates with the central black hole, with an edge just 5 radii out:<br>
<a class="moz-txt-link-freetext" href="http://web.mit.edu/newsoffice/2012/measuring-a-black-holes-event-horizon-0927.html">http://web.mit.edu/newsoffice/2012/measuring-a-black-holes-event-horizon-0927.html</a><br>
<a class="moz-txt-link-freetext" href="http://www.sciencedaily.com/releases/2012/09/120927144526.htm">http://www.sciencedaily.com/releases/2012/09/120927144526.htm</a><br>
<a class="moz-txt-link-freetext" href="https://www.sciencemag.org/content/early/2012/09/26/science.1224768">https://www.sciencemag.org/content/early/2012/09/26/science.1224768</a><br>
<br>
Of course, a more visually impressive image of M87 is<br>
<a class="moz-txt-link-freetext" href="http://hubblesite.org/newscenter/archive/releases/2000/20/image/a/format/large_web/">http://hubblesite.org/newscenter/archive/releases/2000/20/image/a/format/large_web/</a><br>
<a class="moz-txt-link-freetext" href="http://hubblesite.org/newscenter/archive/releases/2000/20/image/a/">http://hubblesite.org/newscenter/archive/releases/2000/20/image/a/</a><br>
but the sheer *measurement* in the above paper is pretty impressive.
<br>
<br>
<pre class="moz-signature" cols="72">--
Anders Sandberg,
Future of Humanity Institute
Oxford Martin School
Faculty of Philosophy
Oxford University </pre>
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