The Expanse of Heaven: a Series of Essays on the Wonders of the Firmament

551 Broadway actual Almighty Alpha Centauri altogether appear APPLETON asteroids Astronomer Royal astronomers atmosphere attractive blue sun bodies brightness circling clouds colour comet course degree diameter distance double stars earth enormous enquire exist fact giant planets globe glowing heavens Herschel hundred illustration imagine infer infinite inhabitants Jupiter Jupiter's known larger lative less light and heat living creatures Mars mass matter meteors miles per second Milky moon moon's motion moving nature nearly Neptune night objects observed orange day orange sun orbit orbs passed path perceive planetary present probably processes Prof R. A. PROCTOR readers reality reason recognise regarded regions remarkable respecting round the sun Saturn scheme scientific seen shining Sirius solar system space star depths stellar sun's suppose surface telescope terrestrial theory thou thought thousand tion travelling universe Uranus vapour velocity Venus volume wonderful worlds