An absorption nebula is a dark nebula, which absorbs all incident radiation without reemission.
Infrared light is capable of penetrating the dust of a nebula because it has longer wavelengths that can pass through the dust particles without much scattering or absorption. This allows astronomers to study the inner regions of a nebula where visible light may be blocked.
Emission nebula glow and reflection nebula reflect the light form other stars
See related link
Another popular nebula is the Eagle Nebula, also known as Messier 16. It is located in the constellation Serpens and is famous for the "Pillars of Creation," which are towering columns of interstellar gas and dust where new stars are forming.
The Andromeda Nebula was created in 1967.
The dark clouds in space are called absorption nebulas or dark nebulas. An absorption nebula is a cloud of gas and dust which blocks light from the regions of space behind it. As light from space reaches an absorption nebula it is absorbed by it and does not pass through. Absorption nebulas do not create their own light. It is hard to find an absorption nebula unless it is silhouetted against much brighter region of space.
Infrared light is capable of penetrating the dust of a nebula because it has longer wavelengths that can pass through the dust particles without much scattering or absorption. This allows astronomers to study the inner regions of a nebula where visible light may be blocked.
One consequence of dust in the interstellar medium is causing reddening of starlight due to scattering and absorption.
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
Emission nebula glow and reflection nebula reflect the light form other stars
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.
The crab nebula.
protostar or nebula