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One black hole is nice, but astrophysicists can do a lot more science with 50 of them.
A new study shows that extreme black holes could break the famous “no-hair” theorem, and in a way that we could detect.
Small black holes were nowhere to be found, leading astronomers to wonder if they didn’t exist at all. Now a series of findings, including a “unicorn” black hole, has raised hopes of solving the decade-long mystery.
For decades, astronomers debated whether a particular smudge was close-by and small, or distant and huge. A new X-ray map supports the massive option.
Once missing in action, middleweight black holes have finally been detected. Now researchers are trying to figure out how they grow from small ones.
Roger Penrose, Reinhard Genzel and Andrea Ghez were awarded the Nobel Prize in Physics for their studies of black holes.
It was an old idea of Stephen Hawking’s: Unseen “primordial” black holes might be the hidden dark matter. A new series of studies has shown how the theory can work.