- Emission Nebula
- A nebula that derives its visible light from the fluorescence of ultraviolet light which comes from a star that is in or near the nebula.
The writer's dictionary of science fiction, fantasy, horror and mythology. 2014.
The writer's dictionary of science fiction, fantasy, horror and mythology. 2014.
Emission 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 … Wikipedia
emission nebula — Astron. a bright diffuse nebula that emits light as a result of ionization of its gas atoms by ultraviolet radiation, as the Orion Nebula, planetary nebulae, and supernova remnants, as the Crab Nebula. * * * ▪ astronomy in astronomy, a bright,… … Universalium
emission nebula — Astron. a bright diffuse nebula that emits light as a result of ionization of its gas atoms by ultraviolet radiation, as the Orion Nebula, planetary nebulae, and supernova remnants, as the Crab Nebula … Useful english dictionary
Emission — may refer to: * Flue gas, also: ** Exhaust gas, flue gas occurring as a result of the combustion of a fuel * Emission of air pollutants * Emission (electromagnetic radiation), the process by which the energy of a photon is released by another… … Wikipedia
nebula — nebular, adj. /neb yeuh leuh/, n., pl. nebulae / lee , luy /, nebulas. 1. Astron. a. Also called diffuse nebula. a cloud of interstellar gas and dust. Cf. dark nebula, emission nebula, reflection nebula … Universalium
Nebula — Nebulae redirects here. For the supercomputer in China, see Nebulae (computer). For other uses, see Nebula (disambiguation). The Pillars of Creation from the Eagle Nebula … Wikipedia
Homunculus Nebula — emission nebula name = Homunculus Nebula epoch = J2000 type = Emission nebula ra = RA|10|45|03.6 dec = DEC| 59|41|04 dist ly = 7,500 ly z = appmag v=6.21 ( 0.8 ndash;7.9) size v = constellation = Carina radius ly = absmag v = notes = Bipolar… … Wikipedia
Trifid Nebula — by the Hubble Space Telescope (NASA/ESA) Observation data: J2000 epoch Type … Wikipedia
North America Nebula — This image layout reveals how the appearance of the North America nebula can change dramatically using different combinations of visible and infrared observations. Observation data: J2000.0 epoc … Wikipedia
Lagoon Nebula — M8, the Lagoon Nebula Observation data: J2000 epoch Type Emission … Wikipedia