planetary nebula
41Little Ghost Nebula — Observation data (Epoch J2000) Right ascension 17h 29m 20.443s …
42Red Spider Nebula — A Hubble Space Telescope image of NGC 6537 Credit: NASA/STScI/ESA Observation data (Epoch J2000.0) …
43Necklace Nebula — Necklace Nebula, image from Hubble Space Telescope, July 2, 2011. Hubble s Wide Field Camera 3 captured the glow of hydrogen (blue), oxygen (green), and nitrogen (red).[1] The Necklace Nebula (PN G054.2 03.4) is a planetary nebula located about… …
44List of planetary nebulae — The following is a list of major planetary nebulae. NotesData values are sourced from the individual articles for each nebula. Please see the article of the nebula in question for data references.Many distances are estimates (denoted by the… …
45Bipolar nebula — A bipolar nebula is a distinctive nebular formation characterized by an axially symmetric bi lobed appearance. Many, but not all, planetary nebulae exhibit an observed bipolar structure. It may be that the two types of nebulae are directly… …
46Water Lily Nebula — The Water Lily Nebula, in the southern constellation of Ara, is a pre planetary nebula also known as IRAS 16594 4656, in the process of developing to a planetary nebula. It is one of the pre planetary nebulae containing polycyclic aromatic… …
47Crab Nebula — Crab Nebula …
48Ring Nebula — Astron. a planetary nebula in the constellation Lyra that has a ringlike appearance surrounding its central star. * * * ring nebula, 1. a kind of planetary nebula that looks like a ring when viewed through a telescope or on a photographic plate.… …
49Boomerang Nebula — Protoplanetary nebula caption=The Boomerang Nebula. Credit: NASA/ESA name = Boomerang Nebula epoch = J2000 ra = RA|12|44|45.45Harvard reference | Surname1 = SIMBAD | Title = Results for Boomerang Nebula | Authorlink = SIMBAD | Journal = | Year =… …
50Emission nebula — An emission nebula is a cloud of ionized gas ( i.e. a plasma) emitting light of various colors. The most common source for ionization are high energy photons emitted from a nearby hot star. Among the several different types of emission nebula are …
