The Exploration of SpaceTemple Press, 1951 - 198 pagini |
Din interiorul cărții
Rezultatele 1 - 3 din 14
Pagina 12
... moving in its orbit at 107,000 m.p.h. , the Earth at a more modest 68,000 and Pluto at a mere 10,000 m.p.h. The second important point is that almost all the planets lie in or very near the same plane , so that the Solar System is ...
... moving in its orbit at 107,000 m.p.h. , the Earth at a more modest 68,000 and Pluto at a mere 10,000 m.p.h. The second important point is that almost all the planets lie in or very near the same plane , so that the Solar System is ...
Pagina 52
... moving freely in empty space , with its motors cut off , is not resisting gravity : on the contrary , it is letting gravity take it where it will . It is sometimes said to be in free fall , but this is perhaps an unfortunate phrase ...
... moving freely in empty space , with its motors cut off , is not resisting gravity : on the contrary , it is letting gravity take it where it will . It is sometimes said to be in free fall , but this is perhaps an unfortunate phrase ...
Pagina 100
... moving past the portholes . Even then the impression would be a purely psychological one — of the kind most people have experienced when sitting in a train and seeing another apparently moving on a parallel track . In those ...
... moving past the portholes . Even then the impression would be a purely psychological one — of the kind most people have experienced when sitting in a train and seeing another apparently moving on a parallel track . In those ...
Cuprins
THE SHAPING OF THE DREAM | 1 |
THE EARTH AND ITS NEIGHBOURS | 9 |
THE ROCKET | 17 |
Drept de autor | |
19 alte secțiuni nu sunt arătate
Alte ediții - Afișează-le pe toate
Termeni și expresii frecvente
able acceleration actual already appear astronautics astronomers atmosphere atomic become body build carry certainly Chapter close completely consider considerable course deal developed difficult direction discovered discuss distance Earth effect energy escape exist exploration extremely fact fall field Figure fuel give given gravity greater heat human hundred idea imagine important impossible increase interesting interplanetary involved journey known landing least less light limit live look lunar Mars material matter means miles minutes Moon motors necessary never observed once orbit oxygen perhaps period planets Plate possible practical present pressure probably problem produce purely radio reach reason relatively remain rocket round satellite scientific seems seen ship shown simple Solar space spaceship speed stars stations structure surface telescope temperature thousand Universe velocity Venus weight whole