NASA's Spitzer Finds Hidden, Hungry Black Holes

Most of the biggest black holes in the universe have been eating cosmic meals behind closed doors – until now.
With its sharp infrared eyes, NASA's Spitzer Space Telescope peered through walls of galactic dust to uncover what may be the long-sought missing population of hungry black holes known as quasars.

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<p><a href="http://www.physorg.com/news5603.html">NASA's Spitzer Finds Hidden, Hungry Black Holes</a></p> <p>Most of the biggest black holes in the universe have been eating cosmic meals behind closed doors – until now. <br>With its sharp infrared eyes, NASA's Spitzer Space Telescope peered through walls of galactic dust to uncover what may be the long-sought missing population of hungry black holes known as quasars. </p>