red giant and a white dwarf tagged posts

This is an image of the R Aquarii nebula taken with the Nordic Optical Telescope (NOT) at the Observatory of Roque de los Muchachos (ORM) in La Palma. Colours indicate different ionization stages of the same chemical element, oxygen. Credit: R. Corradi – Daniel López

Scientists have published a detailed study of the evolution of the nebula surrounding the symbiotic star R Aquarii. The study employed observations from telescopes at the Roque de los Muchachos Observatory, La Palma, and Chile taken over the course of more than two decades. In astronomical terms, at 600 light years away, the nebula around R Aquarii is rather close to us...