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Deepest X-ray image to date uncovers a black hole bonanza
Believe it or not, that's not a star field you're looking at. Researchers have used NASA's Chandra X-ray Observatory to produce an X-ray image of space (the deepest-ever X-ray, in fact) that has uncovered an abundance of supermassive black holes -- they represent 70 percent of the objects in the picture above. Many of these holes would normally be undetectable, especially distant ones from the early universe, and it took 11.5 weeks of total observation time to spot them all. Think of it as a very, very long exposure photo, just for X-ray emissions.
