IC 443

IC443, also known as the Medusa Nebula, is a supernova remnant located in the constellation Gemini. The nebula gets its name from its appearance, which resembles a jellyfish with long, protruding tentacles.
IC 443 is located about 5,000 light-years from Earth and spans about 70 light-years. It is one of the most studied supernova remnants, offering insight into the processes that occur during the death of massive stars and the subsequent formation of new stars and planetary systems.