Bir bulutsu; toz, hidrojen, helyum ve diğer iyonize gazlardan oluşmuş bir yıldızlararası buluttur. - A nebula is an interstellar cloud of dust, hydrogen, helium and other ionized gases.
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
{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
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 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
A nebula is a cloud of dust and gas in space. New stars are produced from nebulae. Any of various tenuous clouds of gas and dust in interstellar space. Nebulae constitute only a small percentage of a galaxy's mass. Dark nebulae (e.g., the Coalsack) are very dense, cold molecular clouds that appear as large, obscure, irregularly shaped areas in the sky. Bright nebulae (e.g., the Crab Nebula, planetary nebula) appear as faintly luminous, glowing surfaces; they emit their own light or reflect that of stars near them. The term nebula also formerly referred to galaxies outside the Milky Way Galaxy. Crab Nebula Gum Nebula Orion Nebula planetary nebula solar nebula
A large, tenuous cloud of interstellar dust and gas in space created of the remnants of an exploded star or a galaxy in the making The dust and gas can pose a hazard to the ship when traveling at high impulse speeds
A cloud of gas and/or dust in interstellar space (The word nebula in Latin means "cloud"; its plural is "nebulae '') Nebulae can make themselves apparent by glowing (as "emission nebulae''), by scattering light from stars within them (as "reflection nebulae''), or by blocking light from things behind them (as "obscuration nebulae'')
A term used to describe celestial objects which have a fuzzy, or nebulous, appearance (from the Latin for cloud ), such as gas, or dust, clouds Galaxies were once described thus
(pathology) a faint cloudy spot on the cornea an immense cloud of gas (mainly hydrogen) and dust in interstellar space cloudiness of the urine a medicinal liquid preparation intended for use in an atomizer
A diffuse mass of interstellar dust and gas Neutrino A fundamental particle supposedly produced in massive numbers by the nuclear reactions in stars; they are very hard to detect because the vast majority of them pass completely through the Earth without interacting Nuclear Fusion A nuclear process whereby several small nuclei are combined to make a larger one whose mass is slightly smaller than the sum of the small ones The difference in mass is converted to energy by Einstein's famous equivalence E=mc2 This is the source of the Sun's energy and, ultimately, of (almost) all energy on Earth