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New Delhi: Astronomers have stumbled upon a cosmic riddle so strange and spectacular that it could rewrite what we know about galaxies and black holes. The most powerful and most distant “odd radio circle” (ORC) ever detected has just been discovered, thanks not to artificial intelligence, but to human eyes.

First detected only six years ago, ORCs are among astronomy’s newest mysteries: vast, ghostly rings of radio light surrounding galaxies, visible only to radio telescopes. To put their size into perspective--most stretch 10 to 20 times larger than our Milky Way. Their origin? Still up for debate. Some theories suggest violent shockwaves from colliding supermassive black holes. Others point to galactic superwinds blowing thro

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