It's the last clearly observed supernova in the Milky Way, Gassel said.

Type Ia supernovae are stellar explosions used to measure the universe's expansion. These explosions result from white dwarfs exceeding a critical mass, causing them to reignite and explode. Two ...

"The large volume of data from Rubin will give us a sample of all kinds of Type Ia supernovas at a range of distances and in many different types of galaxies." When you purchase through links on our ...