Observations from the worldwide network of radio telescopes show the fire hose of plasma shooting from a distant galaxy does something strange near its source.
Detailed calculations reveal a surprise about how black holes bend light around themselves, opening a new possibility for future observations.
Two studies support the suspicion that our galaxy’s black hole had one or more outbursts a few million years ago.
Only a month into a new observing run, gravitational-wave observatories have announced five new signals — one of which could turn out to be a black hole swallowing a neutron star.
Astronomers are taking a cue from bats, using a method similar to echolocation to map out the feeding environment around a black hole.
The glow of a star torn up by a supermassive black hole has enabled researchers to measure how fast the black hole whirls around.