Mystery Circles in Space May Signal Black Hole Explosions
Strange circular radio wave structures in space, known as odd radio circles (ORCs), have puzzled astronomers since their discovery in 2019. A recent study of one such ORC, J0356-4216, suggests they may be caused by shock waves from past galaxy activity, such as black hole flares or galaxy collisions. These structures are visible only in radio wavelengths and could provide new insights into cosmic phenomena.