"It's really difficult to overstate how bad we are at finding intermediate mass black holes." ...
For every galaxy that's visible from Earth, there are nine smaller ones that we can't see, even with all the technology we've ...
DS1, collapsed into a black hole without exploding, revealing how stars die in silent “failed supernova” events.
If confirmed, this disappearing act might provide the closest and best observational evidence for the birth of a black hole ...