In the last few years, astronomers have spotted a handful of gigantic and almost perfectly circular radio objects out in the distant universe. Though no one has an explanation for these mysterious entities yet, a team has recently added another one to their catalog, potentially moving them closer to solving this head-scratcher.

The enigma began shortly after the Australian Square Kilometre Array Pathfinder (ASKAP), a bank of 36 colossal dishes in Western Australia that scans the heavens in the radio part of the electromagnetic spectrum began producing maps of the entire night sky in 2019.

ASKAP scientists were mainly looking for bright sources that could indicate the presence of black holes or huge galaxies glowing in radio waves. But some in the team are always on the hunt "for whatever is weird, whatever is new, and whatever looks like nothing else," Bärbel Koribalski, a galactic astronomer at Commonwealth Scientific and Industrial Research Organization (CSIRO) and Western Sydney University in Australia, told Live Science.

To learn more and share it with your friends through this link