hydrogen stars

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• Hydrogen cyanide — IUPAC name …   Wikipedia

• Hydrogen — This article is about the chemistry of hydrogen. For the physics of atomic hydrogen, see Hydrogen atom. For other meanings, see Hydrogen (disambiguation). ← hydrogen → helium …   Wikipedia

• Hydrogen line — For hydrogen lines in general, see Hydrogen spectral series. The hydrogen line, 21 centimeter line or HI line refers to the electromagnetic radiation spectral line that is created by a change in the energy state of neutral hydrogen atoms. This… …   Wikipedia

• Hydrogen burning process — In the context of stellar nucleosynthesis, a hydrogen burning process can refer to either the proton proton chain reactions dominant in main sequence stars lighter than at most 5 solar masses, or to the CNO cycle dominant in heavier stars. Both… …   Wikipedia

• Hydrogen anion — The hydrogen anion is a negative hydrogen ion, H−. It is an important constituent of the atmosphere of stars, such as the Sun, where it is the dominant absorber of photons with energies in the range 0.75 0.4 eV, ranging from the infrared into the …   Wikipedia

• hydrogen cloud — ▪ astronomy also spelled  H I region  or  H i region        in astronomy, interstellar matter composed of neutral hydrogen atoms. Most of the matter between the stars in the Milky Way Galaxy, to which the Earth belongs, as well as in other spiral …   Universalium

• hydrogen burning — noun the nucleosynthesis process, in stars of less than 1.2 solar mass, in which hydrogen is converted to helium, deuterium and some lithium …   Wiktionary

• Herbig Ae/Be stars — are pre main sequence stars young ( …   Wikipedia

• List of nearest stars — Artist s conception of a red dwarf star, the most common type of star in the Sun s stellar neighborhood, and in the universe. Although termed a red dwarf, the surface temperature of this star would give it an orange hue when viewed from close… …   Wikipedia

• Revolt in the Stars — is a science fiction film screenplay written by Scientology founder and science fiction writer L. Ron Hubbard in 1977.cite book | last =Atack | first =Jon | authorlink =Jon Atack | title = | publisher =Carol Publishing Group | date =1990 |… …   Wikipedia

• Timeline of white dwarfs, neutron stars, and supernovae — Timeline of white dwarfs, neutron stars, and supernovaeNote that this list is mainly about the development of knowledge, but also about some supernovae taking place. For a separate list of the latter, see the section Notable supernovae in the… …   Wikipedia