Word: marse
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Dates: during 1950-1959
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To go to Mars, whose orbit is outside the earth's, the spaceship must climb up the side of the sun's gravitational pit-by speeding up. To reach Venus it must climb down-by slowing down.
For a voyage to Mars the space navigator takes his departure from earth in the same direction that the earth is moving around its orbit (see chart). His ship must have a speed of only 870 m.p.h. over escape velocity. The excess speed is added to the earth's...
Perhaps the most striking thing about space navigation is the ease of longdistance travel after successful launching. Mars never comes closer to the earth than 34.5 million miles, Venus never closer than 25 million miles. To cover these great distances, it takes more time (146 days to Venus, 260 days...
Interstellar Escape. Full escape from the gravitational pull of the sun would be tougher. Starting from the earth's surface, a ship would need 36,800 m.p.h. Soaring past Mars, Jupiter, Saturn, Uranus, Neptune and Pluto, it would reach the outer limits of the solar system with almost no...
How close is interplanetary voyaging? The great weight (2,925 lbs. of instrumented payload) of Sputnik III proved to the space-wise that the Russians had practically licked the initial problems of interplanetary flight. U.S. scientists reckon that the Soviets' Lunik, with only a little more speed, would have...