M1, The Crab Nebula
The Crab Nebula (which looks nothing like a crab in photos) is one of the iconic nebulae in the night sky. It’s even the first entry in Charles Messier’s famous […]
supernova remnant
A supernova remnant is the structure resulting from the explosion of a star in a supernova. The supernova remnant is bounded by an expanding shock wave, and consists of ejected material expanding from the explosion, and the interstellar material it sweeps up and shocks along the way.
