Astronomers Discover Teleios, A Supernova Remnant with Perfect Symmetry

A newly discovered supernova remnant named “Teleios,” meaning “perfect” in Greek, is astonishing scientists with its rare circular symmetry. Detected using data from ASKAP’s Evolutionary Map of the Universe, Teleios (G305.4–2.2) could be located 7,170 or 25,100 light years away. With a steep spectral index and low surface brightness, its origin is likely a Type Ia supernova. However, more high-resolution studies are needed to confirm this. Teleios opens new possibilities in understanding supernova evolution and interstellar medium interactions.