First-Ever Capture of Supernova Remnant G115.5+9.1: A Cosmic Duo Named After Mythological Monsters

A team of amateur astrophotographers has uncovered the faint remains of a long-dead massive star, capturing the first image of supernova remnant G115.5+9.1—dubbed "Scylla"—in the constellation Cepheus (the Ethiopian king of myth). The discovery, hidden in sky survey data, reveals a glowing patch where hydrogen atoms emit red light and oxygen atoms shine in faint blue, marking the aftermath of a stellar explosion that likely occurred thousands of years ago.