Astronomers have spotted strange circular objects, deep in space, through telescopes.
The objects “do not seem to correspond to any known type of object”, report the scientists who find them, who do not have any definitive explanation of how they may have formed.
So far, four of the objects have been found, all of them circular and otherwise unexplained. Three of them have glowing edges.
The objects may also represent a new view of an already known phenomenon, the scientists say in their new paper. They could be the result of looking at the jets of a radio galaxy down the end, for instance, appearing circular because we are facing down the “barrel” of the blast.
The objects were spotted by a new kind of radio telescopes, the Australian Square Kilometre Array Pathfinder, researchers report in a new paper published on the arXiv and which has been submitted for publication in Nature Astronomy. They were discovered while researchers were working to conduct the Evolutionary Map of the Universe (EMU) survey, which scans the sky.