Nearly a decade ago, NASA's Chandra X-ray Observatory caught signs of what appeared to be a black hole snacking on gas at the middle of the nearby Sculptor galaxy. Now, NASA's Nuclear Spectroscopic Telescope Array (NuSTAR), which sees higher-energy X-ray light, has taken a peek and found the black hole asleep.
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/R...
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/R...