Fuel of the Sun

absorption according amount aphelion appear aqueous vapour asteroids astronomers atmo atmosphere of Mars atmospheric matter atoms body bright brilliancy burner calculated carbonic acid centre CHAPTER chromosphere clouds combustion compression condensation constitution corona dark degree density depth described diameter disc dissociated gases distance earth earth's atmosphere ejected envelope existence explanation faculæ flame force gaseous matter gravitation greater Guillemin hydrogen hypothesis increased irregular jets Jupiter Jupiter's limits Lockyer luminosity luminous magnitude Mars mass Mercury meteoric meteorites miles moon nebulæ nucleus observed orbits outer oxide oxygen particles penumbra phenomena photosphere planet planetary polar portion present pressure produce projectile prominences quantity R. A. Proctor radiation rarefaction regions result rings rotation satellites Saturn solar atmosphere solar prominences solar surface solid space specific gravity spectroscope spectrum sphere spots stars sun-spots sun's supposed telescopic temperature terrestrial tion umbra Uranus varying velocity Venus visible Wollaston's zodiacal light دو وو