A huge bar of iron has been discovered lurking inside the iconic Ring Nebula. The structure is enormous, spanning hundreds of times the size of Pluto’s orbit and containing a Mars-sized amount of iron ...
A "bar" of iron atoms, colored red in this image, has been hiding inside the Ring Nebula. Roger Wesson et al. / MNRAS A famous nebula is revealing new secrets even after being observed for almost 250 ...