From the far reaches of the observable Universe, astronomers have just seen a supermassive black hole suddenly flare to life.
The researchers looked more closely and discovered that the distance the light had traveled was much farther than they had initially thought: 10 billion years, as opposed to 500 million. The flare was traced to the center of a galaxy at that location in space and time.
This also meant that the flare was incredibly bright – consistent not with a single explosion, but the ongoing glow created bythe extreme environment outside a supermassive black hole as it falls onto it. The suddenness of the flare, as well as the amount of light, also suggested that the black hole had abruptly started feeding in vast amounts of material, from a quiescent state toThere are two possible explanations for this. The first is that the black hole started feeding from material
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