Researchers perplexed by “Odd Radio Circles,” a newly discovered – lintelligencer

Researchers believe they have discovered a new, bizarre type of cosmic object that is invisible to all wavelengths of light except radio.
The mysterious rings have been dubbed Odd Radio Circles, or ORCs, as they “do not seem to correspond to any known type of object”, according to a recent study published by a team led by Western Sydney University astrophysicist Ray Norris.
All four ORCs are only visible in radio wavelengths. They are completely invisible in X-ray, optical, or infrared wavelen…

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