Do Medium-Sized Black Holes Exist? Scientists Find Clues

Scientists at NASA are investigating whether black holes, which can be both petite and monstrous, also come in an in-between size. According to scientists, black holes can be about 10 times the size of the sun, or can boast the equivalent in mass of up to 10 billion suns. However, the existence of a medium-sized black hole is yet to be confirmed, and to do that, NASA's Nuclear Spectroscopic Telescope Array, or NuSTAR, is examining a class of black holes that are expected to fall into the propose...