Black holes formed quasars less than a billion years after Big Bang

EnlargeNASA, ESA, CSA, Joseph Olmsted (STScI)

Supermassive black holes appear to be present at the center of every galaxy, going back to some of the earliest galaxies in the Universe. And we have no idea how they got there. It shouldn’t be possible for them to grow from supernova remnants to supermassive sizes as quickly as they do. And we’re not aware of any other mechanism that could form something big enough that extreme growth wouldn’t be necessary.

The seeming impossibility of supermassive black holes in the early Universe was already a bit of a problem; the James Webb Space Telescope

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