A composite false-color view of the Jellyfish Nebula and its surroundings in several different types of light shows structures that reveal the presence of not one but two supernova remnants. This newly discovered system is made up of one of the most studied supernova remnants in our galaxy, IC 443 (the Jellyfish Nebula), and a second, fainter remnant, called G189.6+3.3, hiding nearby. The evidence was too ambiguous to be a “smoking gun” for a second supernova remnant. This discrepancy, they say, denotes where two different types of particles are releasing gamma rays within the expanding shock waves. It traveled far enough that, when the second star exploded, this second supernova didn’t combine with the remains of the first.