Four mysterious objects spotted in deep space
Words by Mara Johnson-Groh
There’s something unusual lurking out in the depths of space: astronomers have discovered four faint objects that at radio wavelengths are highly circular and brighter along their edges. And they’re unlike any class of astronomical object ever seen before. The objects, which look like distant ring-shaped islands, have been dubbed odd radio circles (ORCs) for their shape and overall peculiarity.