An illustration of a supermassive black hole feeding on a disk of infalling matter
2025-09-05 1242词 困难
To be visible at all across such vast stretches of space, the “quasi-stellar object” (quasar for short) 3C 273 had to be overwhelmingly bright. Scientists ultimately settled on a feeding black hole at the heart of a far-distant galaxy as the most likely engine for 3C 273’s ridiculous luminosity. And this wasn’t just any black hole but a positively Brobdingnagian one, likely containing 900 million times the mass of our sun.
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