The Exploration of SpaceTemple Press, 1951 - 198 pagini |
Din interiorul cărții
Rezultatele 1 - 3 din 20
Pagina 2
... imagine that , if one could make a workable pair of wings , they could be used to take one to the Moon . After Lucian , the theme of space - travel was neglected for almost fifteen hundred years . When it was again renewed , it was in a ...
... imagine that , if one could make a workable pair of wings , they could be used to take one to the Moon . After Lucian , the theme of space - travel was neglected for almost fifteen hundred years . When it was again renewed , it was in a ...
Pagina 20
... imagine that his vehicle is carrying a load of bricks ( Figure 5 ) . He takes one and throws it towards the right , producing a recoil as he does so . Since the mass of the brick is only a small fraction of that of the trolley and its ...
... imagine that his vehicle is carrying a load of bricks ( Figure 5 ) . He takes one and throws it towards the right , producing a recoil as he does so . Since the mass of the brick is only a small fraction of that of the trolley and its ...
Pagina 109
... imagine that plant life might adapt itself to lunar conditions ( some terrestrial cacti thrive in almost equally unpromising environ- ments ! ) , but for the present this must remain speculation . One of the most curious - and ...
... imagine that plant life might adapt itself to lunar conditions ( some terrestrial cacti thrive in almost equally unpromising environ- ments ! ) , but for the present this must remain speculation . One of the most curious - and ...
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