‘For lovers of cool astronomy and math, this finding is a real treat. Citizen astronomers stumbled upon not one but two rings of extragalactic radio signals crossing each other to form a near-perfect Venn diagram.

A paper published October 2 in Monthly Notices of the Royal Astronomical Society identifies this strangely geometric object as an “odd radio circle” (ORC), vast rings of magnetized plasma. These rings, only visible at radio wavelengths, emit non-thermal synchrotron radiation. They’re also gigantic, typically spanning hundreds of thousands of light-years. Astronomers have only documented a small handful of cases, but this particular pair of rings is reportedly the most distant and most powerful so far.…’ (Gayoung Lee via Gizmodo)