The crab nebula.
A nebula. That's composed mostly of hot gasses. Hence, the name. Hot nebula.
protostar or nebula
Galaxy
Swan Nebula
The Horsehead Nebula can be found in the constellation Orion. Its name comes from its resemblance to a horse's head. The Horsehead Nebula was first discovered by Williamina Fleming in 1888.
The Crab Nebula is a nebula.
The Big Bang Theory
Nebula
Crab Nebula
"Primordial nebula" is a name used to describe a region of gas in space which is undergoing gravitational collapse, and which will eventually form a star.
Triffid Nebula, Eagle Nebula, Cat's Eye nebula