Fuel of the Sun

absorption according amount appear aqueous vapour asteroids astronomers atmo atmospheric matter atoms bands body bright brilliancy calculated carbonic acid carbonic oxide cavity centre chromosphere clouds colour combustion condensation constitution corona corresponding cubic centimetres dark density depth described diameter disc dissociated gases distance earth earth's atmosphere edge ejected envelope exist explanation explosive faculæ flame force gaseous matter gravitation greater Guillemin heat hydrogen hypothesis incandescent inferior planets iron irregular jets Jupiter limits Lockyer luminosity luminous lunar magnitude Mars mass medium Mercury metallic vapours meteoric meteorites miles moon nebulæ nucleus observed orbits outer oxygen particles penumbra phenomena photosphere planet planetary polar portion present pressure produce projected projectile quantity radiation rays regions result ridges ring satellites Saturn seen solar atmosphere solar prominences solid specific gravity spectroscope sphere spot stratum sun-spots sun's supposed telescopic temperature terrestrial theoretical tion Total Eclipse umbra Uranus velocity Venus visible vortices zodiacal light