The Exploration of SpaceTemple Press, 1951 - 198 pagini |
Din interiorul cărții
Rezultatele 1 - 3 din 33
Pagina 46
... round the Sun , taking four years in the process , before it came near Earth again ! Missing an appointment may or may not be a serious matter in everyday life , but in interplanetary travel it would , almost inevitably , be fatal . We ...
... round the Sun , taking four years in the process , before it came near Earth again ! Missing an appointment may or may not be a serious matter in everyday life , but in interplanetary travel it would , almost inevitably , be fatal . We ...
Pagina 61
... round the Earth , and will travel to the Moon and planets . ( 2 ) Manned , single - step rockets will ascend to heights of several hundred miles , landing by wings or parachutes . ( 3 ) Multistage , manned rockets will enter circular ...
... round the Earth , and will travel to the Moon and planets . ( 2 ) Manned , single - step rockets will ascend to heights of several hundred miles , landing by wings or parachutes . ( 3 ) Multistage , manned rockets will enter circular ...
Pagina 137
... round trip would last at least six years . For the planets beyond Jupiter , the times would be still longer . However , if refuelling were possible much more direct routes at far higher speeds would become practicable . Saturn's most ...
... round trip would last at least six years . For the planets beyond Jupiter , the times would be still longer . However , if refuelling were possible much more direct routes at far higher speeds would become practicable . Saturn's most ...
Cuprins
THE SHAPING OF THE DREAM | 1 |
Automatic Rocket Surveying Mars | 4 |
THE EARTH AND ITS NEIGHBOURS | 9 |
Drept de autor | |
22 alte secțiuni nu sunt arătate
Alte ediții - Afișează-le pe toate
Termeni și expresii frecvente
acceleration already astronautics astronomers atmosphere atomic rockets body bricks British Astronomical Association build carry certainly Chapter chemical completely course crew degrees F difficult direction distance Earth energy enormous escape velocity exploration extremely fact Figure free orbit fuel Galaxy gravitational field gravity heat Hermann Oberth hundred miles idea imagine important interplanetary flight interplanetary travel interstellar ionosphere journey Jupiter landing light light-years lunar Mars and Venus Martian means Mercury meteors minutes missile Moon Moon's motors never observed oxygen payload perhaps planetary planets Pluto possible pounds pressure pressurised probably problem produce propellant 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