Astronomers have wondered the appearance of odd radio circles (ORCs) since 2019, but they finally have discovered reasoning behind the ORCs.
In 2019, an Australian Square Kilometer Array Pathfinder telescope picked up radio wave circles large enough to hold entire galaxies within their centers. The discovery left astronomers and astrophysicists stumped. Today, a team of astronomers from the University of California San Diego led by Alison Coil met at the conference in New Orleans hosted by the American Astronomical Society. Coil and her team have come to the answer that the circles are shells that are formed by out-flowing galactic winds. They also have theorized that the winds are most likely formed by massive exploding stars called supernovae. It’s a breakthrough within this part of astronomy, and there’s been more research conducted on the exploding stars.
To read more on the ORCs and supernovae, visit this article by UC San Diego Today.