a nebula is classified by a planetary nebulae
The Ring Nebula is classified as a planetary nebula which is a shell of gas and plasma, formed when certain stars die.So, in a way they are clouds of matter in space.
The "Eagle Nebula" cluster of stars is classified as being part of a diffuse emission nebula. It can be found in the "Serpens" constellation of stars and is thought to be around 5.5 million years old.
Dark nebulae are dense regions of interstellar dust and gas that block the light from stars and other objects behind them. Examples of well-known dark nebulae include the Horsehead Nebula in the constellation Orion, the Coalsack Nebula in the Southern Hemisphere, and the Pipe Nebula in Ophiuchus. These nebulae appear as dark silhouettes against the background of brighter stars and emission or reflection nebulae.
nebula
The Stingray Nebula (Hen 3-1357) is a planetary nebula. (The youngest known).
"The Crab" is a nebula.
a type of nebula
A cloud in outer space consisting of gas or dust and planetry nebula is one of the types also called ring nebula or A planetary nebula is an emission nebula consisting of a glowing shell of gas
The Helix Nebula is a planetary nebula located in the constellation Aquarius, while the Ring Nebula is a planetary nebula located in the constellation Lyra. The Helix Nebula appears more like a disk or helix shape, while the Ring Nebula appears as a ring or donut shape due to its orientation.
Emission nebula glow and reflection nebula reflect the light form other stars
The crab nebula.
protostar or nebula