A rare double-ringed radio circle just appeared in deep space.
Citizen astronomers have identified a rare "odd radio circle" (ORC), a massive, ring-shaped magnetized plasma structure nearly a million light-years across. It's only the second double-ringed ORC discovered and the farthest yet, located 7.5 billion light-years away, with its light predating Earth's formation.
Invisible in regular light, these faint structures are detected by radio telescopes like Europe's LOFAR. Citizen scientists from the RAD@home Astronomy Collaboratory, not AI, spotted this one by analyzing telescope data. The double-ring likely formed after a central galactic explosion, possibly from a supermassive black hole, re-energizing old plasma clouds to glow in radio waves.
The rings, appearing to intersect due to perspective, are likely stacked at different depths, spanning 978,000 light-years—ten times our galaxy's width. Questions remain about their massive size, rarity, and formation, but this find expands our understanding of galaxy evolution, revealing secrets hidden in cosmic static.