Usually they are named of what they look like, like the "Horse Head Nebula". Although some nebulas are named of where they are, like "The Orion Nebula", right below "Orion's Belt".
The types of nebulae that exist in the universe include bright, dark and emission nebulae. Different nebulae are often named for their shape. More information can be found on "Sea and Sky".
Andromeda Galaxy
emission nebulae and reflection nebulae.
In astronomy, diffuse nebulae is the general term for illuminated nebulae. The three types of diffuse nebulae are reflection nebulae, emission nebulae and supernova remnants. They are diffuse as opposed to the non-diffuse dark nebulae, i.e. the particles have spread out.
A nebula is a region of interstellar gas and dust. Emission nebulae are clouds of ionized gas that allow red, blue, and violet light through. Generally, these nebulae appear reddish. Reflection nebulae are clouds of dust that simply reflect light from nearby stars. The dust particles of reflection nebulae usually only scatter blue light, so the appearance is blue. Other types of nebulae don't reflect light. Dark nebulae such as the Horsehead Nebula are so dense that they block light from other sources, such as background emission nebulae, reflection nebulae, or other stars.
The types of nebulae that exist in the universe include bright, dark and emission nebulae. Different nebulae are often named for their shape. More information can be found on "Sea and Sky".
Andromeda Galaxy
emission nebulae and reflection nebulae.
emission nebulae and reflection nebulae.
emission nebulae and reflection nebulae.
In astronomy, diffuse nebulae is the general term for illuminated nebulae. The three types of diffuse nebulae are reflection nebulae, emission nebulae and supernova remnants. They are diffuse as opposed to the non-diffuse dark nebulae, i.e. the particles have spread out.
Planetary nebulae (the cat's eye nebula) Emission nebulae (the orion nebula) Dark nebulae (the horsehead nebula) Supernova remnant nebulae (the crab)
Nebulae - band - was created in 1992.
Planetary Nebulae
A nebula is a region of interstellar gas and dust. Emission nebulae are clouds of ionized gas that allow red, blue, and violet light through. Generally, these nebulae appear reddish. Reflection nebulae are clouds of dust that simply reflect light from nearby stars. The dust particles of reflection nebulae usually only scatter blue light, so the appearance is blue. Other types of nebulae don't reflect light. Dark nebulae such as the Horsehead Nebula are so dense that they block light from other sources, such as background emission nebulae, reflection nebulae, or other stars.
it depends on how large the nebulae is. The largest of nebulae (in both distance and height) form the largest number of stars while the smallest of nebulae (in both distance and height) form the least number of stars. Therefore there is no fixed number for the number of stars that can be formed from a single nebulae (a variable amount of stars can be formed from one nebulae)
Edwin Powell Hubble has written: 'The nebulous envelope around Nova Aquilae no. 3' -- subject(s): Clusters, Stars 'The velocity-distance relation among extra-galactic nebulae' -- subject(s): Nebulae 'Photographic investigations of faint nebulae' -- subject(s): Nebulae 'Distribution of luminosity in elliptical nebulae' -- subject(s): Nebulae 'The Edwin Hubble papers' -- subject(s): Sources, Nebulae, History 'The nature of science, and other lectures' -- subject(s): Science 'A general study of diffuse galactic nebulae' -- subject(s): Nebulae 'Our sample of the universe' -- subject(s): Astronomy, Nebulae, Cosmology 'A spiral nebula as a steller system' -- subject(s): Nebulae