Astronomers have discovered an enormous double-ringed radio structure billions of light-years away. The find challenges theories of black hole activity and hints that galactic winds may shape the universe’s rarest cosmic rings. The Discovery of the Most Distant ORC Astronomers have identified the most distant and powerful “odd radio circle” (ORC) ever observed. These strange [...]from SciTechDaily https://ift.tt/6xnUi5f
