Word: pasts
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Dates: during 1950-1959
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...boundary, about 34,000 miles short of the moon, where the moon's pull is as strong as the earth's. If it reaches this point with a small velocity, it will fall on the moon. If it crosses the line at good speed, it will shoot past the moon, its course merely deflected. This is what happened to the Lunik...
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 speed left. Then, like a chip on a glassy lake, it could drift for millions of years before it approached the nearest star, Proxima Centauri, which is 25 trillion miles away from the sun. Man's spaceships can probably reach interstellar escape velocity in a generation, but there will...
...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 swooped past Mars and soared out toward the asteroids. George Paul Sutton, professor of aeronautical engineering at M.I.T., believes that present propulsion systems with a little refinement can send a space vehicle as far as Jupiter or even to Saturn, 750 million miles from the earth...
Radioactive Moon. Russia's Lunik carried an instrument to measure the radioactivity of the moon's surface. Neither Kuiper nor Gold believes that it could have worked at the distance (4,660 miles) at which the Lunik swept past the moon, but they would be grateful for any information that the Russians choose to release. Dr. Kuiper believes that the moon's surface is blazing with radioactivity. On the earth, he says, the thick layer of air is the shielding equivalent of 3 ft. of lead or 33 ft. of water, protects the surface from many kinds...
Viveca Lindfors as an English lady whose disquieting and perhaps murderous past catches up with her years later in Africa...