The Exploration of SpaceHarper, 1951 - 199 pagini |
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Pagina 15
... 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 thin blanket of air , without which life as we ...
... 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 thin blanket of air , without which life as we ...
Pagina 35
... later , the birth of flight was preceded by a similar chorus of Cassandras -most famous of whom was the great American astronomer Simon Newcomb . ( In 1903 Newcomb wrote a paper which should have convinced the Wrights , had they read it ...
... later , the birth of flight was preceded by a similar chorus of Cassandras -most famous of whom was the great American astronomer Simon Newcomb . ( In 1903 Newcomb wrote a paper which should have convinced the Wrights , had they read it ...
Pagina 71
... later . This , of course , gives the pilot a very wide range of control , though the timing for " take - off " must be exact . For the ship to reach the Moon's orbit , it must leave the vicinity of the Earth at a little less than full ...
... later . This , of course , gives the pilot a very wide range of control , though the timing for " take - off " must be exact . For the ship to reach the Moon's orbit , it must leave the vicinity of the Earth at a little less than full ...
Cuprins
The Shaping of the Dream | 1 |
The Earth and Its Neighbours | 7 |
The Rocket | 17 |
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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