The Exploration of SpaceHarper, 1951 - 199 pagini |
Din interiorul cărții
Rezultatele 1 - 3 din 83
Pagina 41
... Moon ( or in more conventional terms , falling in the Moon's gravitational field ) the rocket would gain speed and , at the moment of impact , would be travelling at over 5,000 m.p.h. It will be seen , however , that if it was not aimed ...
... Moon ( or in more conventional terms , falling in the Moon's gravitational field ) the rocket would gain speed and , at the moment of impact , would be travelling at over 5,000 m.p.h. It will be seen , however , that if it was not aimed ...
Pagina 107
... Moon . Another fairly common lunar formation is the " rill " or " cleft " , of which several examples will be seen in Plate VII.2 Some of these fissures are of great size and would be impressive , if not indeed terrifying , spectacles ...
... Moon . Another fairly common lunar formation is the " rill " or " cleft " , of which several examples will be seen in Plate VII.2 Some of these fissures are of great size and would be impressive , if not indeed terrifying , spectacles ...
Pagina 109
... Moon simply by changing one's position slightly , say from a point in direct sunlight to one in shadow . So the values quoted above can be regarded only as indicating the ... Moon is that , since it always keeps the same face THE MOON 109.
... Moon simply by changing one's position slightly , say from a point in direct sunlight to one in shadow . So the values quoted above can be regarded only as indicating the ... Moon is that , since it always keeps the same face THE MOON 109.
Cuprins
The Shaping of the Dream | 1 |
The Earth and Its Neighbours | 7 |
The Rocket | 17 |
Drept de autor | |
16 alte secțiuni nu sunt arătate
Alte ediții - Afișează-le pe toate
Termeni și expresii frecvente
acceleration already asteroids astronautics astronomers atmosphere body bricks 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 giant gravitational field gravity heat Hermann Oberth hundred miles idea imagine important interplanetary flight interplanetary travel interstellar ionosphere journey Jupiter landing light light-years lunar Mare Imbrium 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 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 tion trolley Uranus voyage weight