Odd radio circles in space may come from black holes at their centres
Astronomers have taken the clearest images yet of "odd radio circles" – mysterious radio waves a million light years across – and they all seem to have central galaxies containing active supermassive black holes
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Astronomers have taken the clearest images yet of "odd radio circles" – mysterious radio waves a million light years across – and they all seem to have central galaxies containing active supermassive black holes
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