A giant cosmic mystery just got bigger. Astronomers have spotted the most distant and most powerful "odd radio circle" (ORC) ever recorded, deepening the puzzle of these rare celestial rings.
ORCs were first identified only six years ago, and so far, just a few have been confirmed. They are enormous, faint, ring-shaped structures of radio emission, often stretching 10"20 times the size of our Milky Way.
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