Besides stars, the United States Navy uses quasars as beacons. Quasars are distant galaxies with supermassive black holes, surrounded by ... X-Ray Flashes from a Nearby Supermassive Black Hole ...
“This looked absolutely nothing like a normal black hole.” Astronomers are not sure why that might be happening. The most likely explanation is that there is a spinning white dwarf slowly ...
An artist's impression of the disappearing corona. (NASA/JPL-Caltech) A relatively modest beast clocking in at around 1 million times the mass of the Sun, the black hole at the center of 1ES 1927+654 ...
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