The black hole at the center of our galaxy just lit up twice as bright as ever. Who knows why
Astronomers said that they observed the supermassive black hole closest to Earth glowing with "unprecedented brightness" — and they aren't quite sure why. , is 4 million times as massive as the Sun and about 26,000 light-years from Earth. Although no visible light can escape the gravitational pull of a black hole, astronomers are able to observe the hot gas that's about to fall into it in near-infrared, the portion of the infrared spectrum closest to light detectable by the human eye. "So we observed basically four nights of observation ...
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