Kepler's Supernova Remnant

The explosion was first observed on October 9, 1604. Johannes Kepler began observing it on October 17. When the star exploded, it could be seen wit

Cassiopeia A: An Exploded Star

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.

Supernova Remnant Menagerie

Location Let's elaborate on the exact location. Our Milky Way galaxy is orbited by a satellite galaxy called the