The dense stellar remnant would, if confirmed, be the closest known object to any black hole, according to preliminary ...
Since 2018, we've seen 1ES 1927+654 generate jets in real time and found it may have a lone white dwarf orbiting near the ...
A strange black hole is making scientists scratch their heads.
The first black hole that astronomers observed "turning off" just turned back on, releasing jets of hot gas into the cosmos.