Cassiopeia A
Cassiopeia A (Cas A) is a supernova remnant located in the constellation Cassiopeia. It lies at an approximate distance of 11,000 light years from Earth… Read More »Cassiopeia A
Cassiopeia A (Cas A) is a supernova remnant located in the constellation Cassiopeia. It lies at an approximate distance of 11,000 light years from Earth… Read More »Cassiopeia A