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sub-stellar point

См. также в других словарях:

  • Stellar evolution — Life cycle of a Sun like star Stellar evolution is the process by which a star undergoes a sequence of radical changes during its lifetime. Depending on the mass of the star, this lifetime ranges from only a few million years (for the most… …   Wikipedia

  • Stellar kinematics — is the study of the movement of stars without needing to understand how they acquired their motion. This differs from stellar dynamics, which takes into account gravitational effects. The motion of a star relative to the Sun can provide useful… …   Wikipedia

  • Stellar classification — In astronomy, stellar classification is a classification of stars based on their spectral characteristics. The spectral class of a star is a designated class of a star describing the ionization of its chromosphere, what atomic excitations are… …   Wikipedia

  • substellar point — |səb+... noun Etymology: substellar from sub + stellar : the point on the earth s surface at which a particular star is in the zenith …   Useful english dictionary

  • Space science — is an all encompassing term that describes all of the various science fields that are concerned with the study of the Universe, generally also meaning excluding the Earth and outside of the Earth s atmosphere . Originally, all of these fields… …   Wikipedia

  • Brown dwarf — Brown dwarfs are sub stellar objects which are too low in mass to sustain hydrogen 1 fusion reactions in their cores, which is characteristic of stars on the main sequence. Brown dwarfs have fully convective surfaces and interiors, with no… …   Wikipedia

  • Main sequence — A Hertzsprung Russell diagram plots the actual brightness (or absolute magnitude) of a star against its color index (represented as B V). The main sequence is visible as a prominent diagonal band that runs from the upper left to the lower right.… …   Wikipedia

  • Barnard's Star — The location of Barnard s Star Observation data Epoch J2000.0      Equinox J2000.0 …   Wikipedia

  • Proxima Centauri — Coordinates: 14h 29m …   Wikipedia

  • Dwarf star — The term dwarf star refers to a variety of distinct classes of stars. Dwarf star alone generally refers to any main sequence star, a star of luminosity class V. Red dwarfs are low mass main sequence stars. Yellow dwarfs are main sequence (dwarf)… …   Wikipedia

  • Methods of detecting extrasolar planets — Any planet is an extremely faint light source compared to its parent star. In addition to the intrinsic difficulty of detecting such a faint light source, the light from the parent star causes a glare that washes it out. For those reasons, only a …   Wikipedia

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