A typical diffuse nebula is a few hundred light-years across. (NGC 2264 shown; see also the Horsehead Nebula) Planetary Nebulae Planetary nebulae are shells of gas thrown out by some stars near the end of their lives. Our Sun will probably produce a planetary nebula in about 5 billion years.
This nebula can be found a third of a degree from the Horsehead Nebula. NGC 2023 is around 1,467 light-years away from Earth. Monkey Head Nebula The Monkey Head Nebula, designated as NGC 2174, is an emission nebula classified as an H II region. It is associated with the open cluster NGC 2175, also located in Orion.
The Andromeda galaxy is the largest galaxy in the Local Group, more than twice the size of the Milky Way. Click for even more amazing facts and information.
Eta Carinae is engulfed by the Homunculus Nebula. This nebula is embedded within the much larger Carina Nebula, a large star-forming H II region. Carina was part of a larger constellation called the Argo Navis – this constellation represented the ship of Jason and the Argonauts. The brightest star, Canopus, marked the ship’s keel.
The nebula itself is located far away from the star, at a distance of around 4,900 light-years. There is a blue O9-class star that illuminates the nebula, however, it is obscured by interstellar dust and much about the star remains unknown.
The nebula is located in the western part of the Perseus molecular cloud, and it is a young region of very active star formation. The Perseus Molecular Cloud The Perseus Molecular Cloud is a giant molecular cloud located at around 1,000 light-years away from us. It contains over 10,000 solar masses of gas and dust covering an area of 6 by 2 ...
The Orion Nebula hangs off of Orion's Belt. It consists of dust, hydrogen, helium, and ionized gases. The Orion Nebula cannot be seen by the naked eye, as it is the most distant "star." Betelgeuse is a red, colossal star that has been imaged as a disk in the Hubble Space Telescope. It sometimes even outshines Rigel.
