Hubble maps the changing constellation of Internet 'black holes'

You're trying to log on to a Web site and it's not working. You try again and again. But persistence doesn't pay off. The site you want is inexplicably, frustratingly, out of reach.

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<p><a href="http://www.physorg.com/news126884005.html">Hubble maps the changing constellation of Internet 'black holes'</a></p> <p>You're trying to log on to a Web site and it's not working. You try again and again. But persistence doesn't pay off. The site you want is inexplicably, frustratingly, out of reach.</p>