The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 40
... already obtained radio echoes from the Moon - a feat hundreds of times more difficult than sending a one - way signal over the same distance ! ) During the next decade it would certainly be possible to build an orbiting rocket carrying ...
... already obtained radio echoes from the Moon - a feat hundreds of times more difficult than sending a one - way signal over the same distance ! ) During the next decade it would certainly be possible to build an orbiting rocket carrying ...
Pagina 87
... already been built for astronomical research ! ) By the use of such installations , there would be no great difficulty in sending speech as far as Mars and Venus , and code messages ( which require much less power ) could be sent at ...
... already been built for astronomical research ! ) By the use of such installations , there would be no great difficulty in sending speech as far as Mars and Venus , and code messages ( which require much less power ) could be sent at ...
Pagina 147
... already been solved . Anyone who has ever watched the mechanical hands and arms at work behind the lead barriers in a laboratory dealing with radioactive isotopes will agree that the remotely controlled robot is already almost with us ...
... already been solved . Anyone who has ever watched the mechanical hands and arms at work behind the lead barriers in a laboratory dealing with radioactive isotopes will agree that the remotely controlled robot is already almost with us ...
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