As black holes go, Sagittarius A* is relatively low-key. The supermassive black hole at the center of our galaxy emits very little energy for its size, giving off roughly as much energy as the Sun, even though it is 4 billion times as massive. This false-color image shows the central region of our Milky [continue reading]
NASA’s newest set of X-ray eyes in the sky, the Nuclear Spectroscopic Telescope Array (NuSTAR), has caught its first look at the giant black hole parked at the center of our galaxy. The observations show the typically mild-mannered black hole during the middle of a flare-up. NuSTAR, has captured these first, focused views of [continue reading]