The Stingray Nebula (Hen 3-1357) is a planetary nebula. (The youngest known).
The Stingray Nebula, the youngest known planetary nebula.
a type of nebula
The famous Ring Nebula in the Lyra (M57 or NGC 6720) is a planetary nebula. All details in http://www.astrocruise.com/m57.htm
nebula
"The Crab" is a nebula.
spiral
Depending on the type of nebula, they can range from a light year across to over a 100 light years in diameter.
No, a nebula is only a few light-years across while a galaxy is thousands of light-years across.
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
It is called a Nebula (nebulae for plural). no sorry but your wrong it is a coma It can be both it just depends. The question needs to be more specific