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The Real Cyrano
Of What Use?
The Democracy of Learning
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advance AFTERWORD animals antimatter antiparticles antiuniverse asteroids astronomers atmosphere atoms beginning Big Dipper black hole body Callisto Cassiopeia century chimpanzee coal comet computers contraction cosmic egg course Cyrano detected Dipper distance Earth effect electric charge electrons ellites energy engine enormous ergy essay exist exploration extraterrestrial fact FOREWORD fuel galaxies Ganymede giant gravitational interaction gravitational pull Greek heat human hydrogen imagine indefinitely Io's Jupiter kilometers land large satellites larger less light light-years live Lunar colonists mankind Mars Martian mass matter methane miles million molecules Moon move negative neutron stars ocean orbit outer percent perhaps petroleum planet planetary population possible produce quantities radiation radio reach remain science fiction ship smaller Solar system space colonies space station speed starship steam Sunlight supply sure surface tachyonic temperature tion trillion universe vacuum Venus volatiles white dwarf