The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 31
... surface , therefore , as we look up at the planets and wonder how we can reach them , are in rather the same position as people at the bottom of a perfectly smooth pit or funnel 4,000 miles deep , set in the surface of an endless , flat ...
... surface , therefore , as we look up at the planets and wonder how we can reach them , are in rather the same position as people at the bottom of a perfectly smooth pit or funnel 4,000 miles deep , set in the surface of an endless , flat ...
Pagina 135
... surface markings on these planets : what we observe is the top of an immensely deep and turbulent atmosphere , perhaps thousands of miles thick . They may indeed possess no solid cores : the compressed gases may go on getting denser and ...
... surface markings on these planets : what we observe is the top of an immensely deep and turbulent atmosphere , perhaps thousands of miles thick . They may indeed possess no solid cores : the compressed gases may go on getting denser and ...
Pagina 151
... surface the period is exactly 24 hours , and a body here , if originally above the Equator , would revolve with the ... surface of the Earth could be surveyed . The same result would be obtained by using an orbit inclined to the Equator ...
... surface the period is exactly 24 hours , and a body here , if originally above the Equator , would revolve with the ... surface of the Earth could be surveyed . The same result would be obtained by using an orbit inclined to the Equator ...
Cuprins
FRONTISPIECE Automatic Rocket Surveying Mars PLATE I HighAltitude ManCarrying Rocket | 3 |
Spaceships Refuelling In Free Orbit | 4 |
The Earth and its Neighbours | 9 |
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acceleration already asteroids astronautics astronomers atmosphere body bricks build carry certainly Chapter chemical climb completely course crew degrees F difficult direction distance Earth energy enormous escape velocity exploration extremely fact Figure flywheel free orbit fuel Galaxy giant gravitational field gravity heat Hermann Oberth hundred miles imagine important interplanetary flight interplanetary travel interstellar involved ionosphere journey Jupiter landing light light-years lunar Mars and Venus Martian means Mercury meteors million minutes missile Moon Moon's motors never observed oxygen payload perhaps planetary planets Pluto possible pounds pressure pressurised probably problem produce propellant Propontis propulsion Proxima Centauri R. A. Smith radar radiation radio reach reason refuelling return to Earth rocket power satellite Saturn scientific ship Solar System space space-flight space-station space-suits space-travel spaceship speed spinning stars stations surface take-off telescope temperature terrestrial thousand thrust trolley Uranus voyage weight