Types of Nebulae | Galaxies, Globular Open Clusters 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
Orion Constellation | Facts, Information, History Definition 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
Andromeda Galaxy Facts - The Nine Planets 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
Merope Star | Facts, Information, History Definition The nebula is also named after Merope and sometimes it is referred to as Tempel’s Nebula – in honor of the German astronomer, Wilhelm Tempel, who discovered it in 1859 The diffuse reflection nebula is the brightest around Merope, where it has an apparent magnitude of 13 The rest of the nebula is fainter than magnitude 16
Nebula List - The Nine Planets NGC 7293 (Helix Nebula) AAT 48k jpg (David Malin) NGC 7354 BB 5k jpg NGC 7662 (The Blue Snowball) BB 5k jpg UMN 62k gif Antares and the Rho Ophiuchus dark cloud UKS 52k jpg; ROE html (David Malin) Faint nebulosity in Orion UKS 51k jpg (David Malin) GK Per (remnant of Nova Persei 1901) WIYN 134k gif; (caption) WIYN 170k gif; (caption) Henize 70
The Origin of the Solar System l The Big Bang - The Nine Planets Here is a brief outline of the current theory of the events in the early history of the solar system: A cloud of interstellar gas and or dust (the “solar nebula”) is disturbed and collapses under its own gravity The disturbance could be, for example, the shock wave from a nearby supernova As the cloud collapses, it heats up and compresses in the center It heats enough for the dust to
Eta Carinae (η Carinae) | Facts, Information, History Definition 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