The Exploration of Space |
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Pagina 15
This is not the case : as we shall see later , it sets a limit to the speed we can develop near the Earth's surface on the way into space and — much more important — it offers a means of making a safe landing on the return .
This is not the case : as we shall see later , it sets a limit to the speed we can develop near the Earth's surface on the way into space and — much more important — it offers a means of making a safe landing on the return .
Pagina 33
This is precisely how the Moon maintains itself in its orbit as it circles the Earth . ... The speed necessary to move in such an orbit near the bottom of the crater ( i.e , near the Earth's surface ( e ) ) is 18,000 m.p.h. , and this ...
This is precisely how the Moon maintains itself in its orbit as it circles the Earth . ... The speed necessary to move in such an orbit near the bottom of the crater ( i.e , near the Earth's surface ( e ) ) is 18,000 m.p.h. , and this ...
Pagina 61
from Earth and assembled in free orbit . As exactly similar problems will be considered when we discuss the building of " space - stations ” , we will not go into them here , except to remark that constructional difficulties should be ...
from Earth and assembled in free orbit . As exactly similar problems will be considered when we discuss the building of " space - stations ” , we will not go into them here , except to remark that constructional difficulties should be ...
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Cuprins
THE SHAPING OF THE DREAM | 1 |
THE EARTH AND ITS NEIGHBOURS | 9 |
THE ROCKET | 17 |
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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 moving 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 seems seen ship shown simple Solar space spaceship speed stars stations structure surface telescope temperature thousand Universe velocity Venus weight whole
Informații bibliografice
| Titlu | The Exploration of Space |
| Autor | Arthur Charles Clarke |
| Editor | Temple Press, 1951 |
| Exemplar original de la | Universitatea din Michigan |
| Scanată la | 14 Dec 2007 |
| Lungime | 198 pagini |
| Exportă citatul | BiBTeX EndNote RefMan |