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nebula    音標拼音: [n'ɛbjələ]
n. 星云,云翳

星雲,雲翳

nebula
n 1: a medicinal liquid preparation intended for use in an
atomizer
2: cloudiness of the urine
3: an immense cloud of gas (mainly hydrogen) and dust in
interstellar space
4: (pathology) a faint cloudy spot on the cornea

Nebula \Neb"u*la\ (n[e^]b"[-u]*l[.a]), n.; pl. {Nebulae}
(n[e^]b"[-u]*l[=e]). [L., mist, cloud; akin to Gr. nefe`lh,
ne`fos, cloud, mist, G. nebel mist, OHG. nebul, D. nevel,
Skr. nabhas cloud, mist. Cf. {Nebule}.]
1. (Astron.) A faint, cloudlike, self-luminous mass of matter
situated beyond the solar system among the stars. The term
was originally applied to any diffuse luminous region.
Now, technically, it is applied to interstellar clouds of
dust and gases ({diffuse nebula}). However distant
galaxies and very distant star clusters often appear like
them in the telescope, such as the {spiral nebula} in
Andromeda, known now to be a distant galaxy.
[1913 Webster PJC]

2. (Med.)
(a) A white spot or a slight opacity of the cornea.
(b) A cloudy appearance in the urine. [Obs.]
[1913 Webster]



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  • Nebula
    Creator-owned and operated Nebula’s ownership model empowers creators to sustain their work financially and encourages innovation and creativity, without the constraints imposed by profit-driven external stakeholders
  • Nebula - Wikipedia
    Nebulae are often star-forming regions, such as the Pillars of Creation in the Eagle Nebula In these regions, the formations of gas, dust, and other materials "clump" together to form denser regions, which attract further matter and eventually become dense enough to form stars
  • What Is a Nebula? | NASA Space Place – NASA Science for Kids
    A nebula is a giant cloud of dust and gas in space Some nebulae (more than one nebula) come from the gas and dust thrown out by the explosion of a dying star, such as a supernova
  • Nebula | Definition, Types, Size, Facts | Britannica
    Nebula, any of the various tenuous clouds of gas and dust that occur in interstellar space The term was formerly applied to any object outside the solar system that had a diffuse appearance rather than a pointlike image, as in the case of a star
  • Nebula: Definition, location and variants - Space
    Nebula is Latin for "mist, vapor, fog, smoke, exhalation," but in an astronomical context, it refers to any celestial object that appears cloud-like when viewed through a telescope
  • What is a Nebula? Definition, Examples, Types Photos
    A nebula is a cloud of gas and dust in outer space They offer appear in the night sky as a bright patch that can be revealed in detail through astrophotography
  • Nebula - Definition, Examples, Types, Facts
    Learn about a nebula in astronomy Discover what a nebula is, types of nebulae, and their role in a star's life cycle
  • What is a nebula? Cosmic clouds and how to see them
    A nebula is a cloud of dust and gas in space that's illuminated and glows like a shining cosmic cloud Nebulae are clouds of gas and dust and there are many scattered throughout the Milky Way, mainly in the galactic disc, and it’s here that stars are born
  • Nebulae: What Are They And Where Do They Come From?
    A nebula is a common feature of our universe, consisting of gas particles and dust which are closely associated with stars and planetary formation
  • Nebula - ESA Hubble
    Nowadays, the term ‘nebula’ refers to an interstellar cloud of dust and gas Nebulae are often formed from the remnants of dying stars: from planetary nebulae or the dispersed debris from supernova explosions





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