SN 2014J

SN 2014J is a supernova that occurred in 2014 in the galaxy M82, about 11.4 million light-years away from Earth. It was a Type Ia supernova, meaning it resulted from a white dwarf star gaining material until it explosively burned out. These supernovae are important cosmic tools because their brightness helps scientists measure distances in the universe. SN 2014J was notable for being one of the closest Type Ia supernovae observed in recent years, providing valuable data to improve understanding of stellar evolution and the expansion of the universe.