Cassiopeia A is an exploded star in the Cassiopeia constellation. It is the brightest astronomical radio-wave source in the sky, which means the pre-existing star was a very massive object.
Kepler's Supernova Remnant is a cloud from an exploded star in our Milky Way galaxy. Other names for this object are Kepler's Supernova, Kepler's Nova, or Kepler's Star. The supernova was named after
Location Let's elaborate on the exact location. Our Milky Way galaxy is orbited by a satellite galaxy called the