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Astronomy Article 7 - spectrum Scientist were able to...

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Black hole Eclipse Nasa.Gov 04/12/07 http://science.nasa.gov/headlines/y2007/12apr_blackholeeclipse.htm? list61925 NASA’s Chandra X-ray observatory has observed an eclipse of a super massive black hole and for the first time a disc of hot matter swirling around the disc was measured. The super massive black hole is located in a galaxy 60 million light years away from earth in a barred spiral galaxy and contains an active galactic nucleus. Matter falling into the hole is heated to millions of degrees before passing through the event horizon. This very hot material glows so brightly that x-rays can see it through the electromagnetic
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Unformatted text preview: spectrum. Scientist were able to measure the disc by recording the amount of time it took for an eclipsing cloud to pass by. The believe that the diameter is about seven times the distance between the sun and the earth making this disc alone about half the size of our own solar system. Because of the eclipsing cloud they were able to measure much closer to the edge of a black hole than ever before. Material this close will most likely cross the event horizon and disappear in about a hundred years, not long at all in cosmic time....
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