The universe-shaking collision of a black hole and a neutron star just led astronomers to a strange type of orbital interaction never seen before, and it's forcing them to rethink their theories.
Astronomers have finally found two enormous black holes at the center of a galaxy that are on the verge of a merger. The discovery explains some longstanding mysterious features of one of the ...
Scientists have observed a supermassive black hole waking up from a nearly 100 million-year nap. The black hole lies at the center of a gigantic galaxy that's emitting extremely strong radio waves. A ...