Abell 2744–QSO1 appears just 700 million years after the Big Bang, an era when astronomers … “Massive black hole from the early universe has astronomers looking back to the Big Bang”

Over the past decade, astronomers have detected many stellar-mass black holes that don’t quite make sense. Stellar-mass … “A dead galaxy from the early universe is forcing astronomers to rethink galactic evolution”

Over the past decade, astronomers have detected many stellar-mass black holes that don’t quite make sense. Stellar-mass … “Strangely large black holes are built, not born”