The Origin of the Earth |
Contents
General description of the Solar System | 15 |
General description of the Earth | 37 |
General description of the Moon and Planets | 65 |
Copyright | |
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alpha particles amount angular momentum arguments astronomical astronomical unit atmosphere atomic weight average density average molecular velocity binary binary star body bombardment brightness calculated carbon dioxide carbon-nitrogen cycle century Cepheid chemical comet cosmic crust Delta Cephei diameter discovery disintegration distance Earth effect electrons elements evidence example formation further Galactic gaseous gases globe heat helium hydrogen hypothesis immense isotope Jupiter Kelvin's known Laplace light lithium luminosity lunar Mars matter Mercury meteorites meteors miles per second million miles million million minor planets molecules Moon Moon's motion nebula Neptune neutrons nitrogen nucleus observations orbital period orbits origin oxygen past perhaps period physical planetary system Pluto positron present pressure principle protons radiation radioactive radium result rocks rotation satellites Saturn Solar System solid space spectrum speed star stellar suggested supposed surface temperature terrestrial theory tidal tion uniformitarian uranium uranium X₁ Uranus velocity of escape wave-lengths