These observations indicate that type II supernovae — explosions of stars more than ten times as massive as the Sun — produce copious amounts of dust, but how and when they do so is not well understood. (sciencedaily.com)
These remnants are left over after a supernova, the titanic explosion of a star many times more massive than our own. (sciencedaily.com)
This was the conclusion announced in March by astronomers who studied explosions of stars in distant galaxies. (newscientist.com)