The Promise of Space |
Contents
IMAGINARY VOYAGES | 3 |
FROM FANTASY TO SCIENCE | 14 |
NOTHING TO PUSH AGAINST | 23 |
Copyright | |
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acceleration achieved altitude Apollo asteroids astronauts astronomers atmosphere body brick moon bricks carried cent century Chapter course developed distance energy engineering enormous escape velocity exist exploration fact feet Figure fuel Galaxy giant Goddard gravitational field gravity heat Hohmann orbits hundred hydrogen imagine instruments interplanetary interstellar J. B. S. Haldane Jupiter landing later launched light-years liquid look Luna Luna 9 lunar Mars Martian Mercury meteoroids million miles missile mission Moon Moon's moving never nuclear orbit oxygen payload Peenemünde perhaps photographs planets Pluto possible pounds pressure problem produce propellant propulsion Proxima Centauri radiation radio Ranger reach requires result rocket S-IVB satellites Saturn scientific scientists signals Solar System Soviet space flight space probe space stations space travel spacecraft spaceship speed of light stage stars surface telescope temperature thousands thrust tons Tsiolkovsky United universe Uranus vehicle Venus voyage weight