A cloud of dense gas and/or dust in interstellar space or surrounding a star They appear indistinct or fuzzy and the term encompasses a wide variety of phenomena For example, star forming regions, shells of gas ejected from evolved stars (``planetary nebulae) and the remants of exploded stars (``supernovae'') can all be called ``nebulae'' Before their nature and distances were determined galaxies were termed spiral nebulae
Cloud of gas and dust usually left by a dead star Such clouds are where most stars form They are primarily located by reflecting light from stars, emitting light from young stars which lie within, or by blocking the view of background stars behind them See also: open cluster
A cloud of gas or dust among the stars A nebula may be luminous (like a neon sign) if excited by a nearby star, or, if it is dusty it may blot out the background of starlight In the past, this term was also used for galaxies because they appeared nebulous
A glowing cloud of gas or dust reflecting the light of nearby stars Here is an example of the ring nebula taken here with the Ultima 2000 telescope and a CCD camera
A term used by optical astronomers to denote any object that resembles a cloud, either bright or dark, and is not stellar in appearance
A cloud in outer space consisting of gas or dust (e.g. a cloud formed after a star explodes)
{i} cloud of cosmic gas or dust in outer space (Astronomy); clouded spot or faint corneal opacity on the cornea (Medicine); cloudiness or cloudy appearance in the urine (Medicine); oily preparation used in a nebulizer
a diffuse mass of interstellar dust and gas A reflection nebula shines by light reflected from nearby stars An emission nebula shines by emitting light as electrons recombine with protons to form hydrogen The electrons were made free by the ultraviolet light of a nearby star shining on a cloud of hydrogen gas A planetary nebula results from the explosion of a solar-like type star
n a scattered mass of interstellar dust and/or gas, visible as light patches or dark areas, depending on the way the mass reflects or absorbs light
Originally a fixed, extended and somewhat fuzzy white haze observed in the sky with a telescope Many of these objects can now be resolved into clouds of individual stars and have been identified as galaxies The gaseous nebulae, however, cannot be resolved into individual stars and consist, for the most part, or interstellar dust and gas In some of these gaseous nebulae the gas atoms have been ionised by ultraviolet radiation from nearby stars and light is emitted as these ions interact with the free electrons in the gas These are called emission nebulae In the dark nebulae, there are no nearby stars and these objects are consequently dark; they can only be detected by what they obscure
a gas or dust cloud in space NIGHT the dark hours between sunset and sunrise NORTH to the left of a person standing east where the sun rises
a cloud of interstellar gas and dust made up mostly of hydrogen and helium Nebulas come in different forms; planetary nebulas, supernova remnants, and diffuse nebulas When stars form, they form as a result of a nebula condensing
(nebulae). göz bebeğine arız olan duman, nebula
Hyphenation
(ne·bu·la·e). göz be·be·ği·ne a·rız o·lan du·man, ne·bu·la