The Exploration of Space |
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Pagina 35
Even five years later the good professor was still stoutly maintaining that an aeroplane could never carry the weight of a passenger as well as a pilot ! ) The lesson of this is that it is never safe to make what may be called ...
Even five years later the good professor was still stoutly maintaining that an aeroplane could never carry the weight of a passenger as well as a pilot ! ) The lesson of this is that it is never safe to make what may be called ...
Pagina 58
( C ) Finally , we have the “ deep space ” type of ship which never lands on any planet . Its function is to travel from an orbit round the Earth to an orbit round the Moon , Mars , or any other world , carrying personnel , fuel and ...
( C ) Finally , we have the “ deep space ” type of ship which never lands on any planet . Its function is to travel from an orbit round the Earth to an orbit round the Moon , Mars , or any other world , carrying personnel , fuel and ...
Pagina 194
This has always been the case with scientific research : it should never be forgotten that , despite all our knowledge , we live in a far more wonderful and even more mysterious world than did our ancestors .
This has always been the case with scientific research : it should never be forgotten that , despite all our knowledge , we live in a far more wonderful and even more mysterious world than did our ancestors .
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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