Word: earthly
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Dates: during 1950-1959
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...airplane is seriously damaged or if something has happened to its oxygen supply, the pilot must bail out. When he cuts loose, the quick-thinking suit switches to a bottle of oxygen in the parachute pack and keeps the man alive on the long fall toward earth...
However, Dr. Fred L. Whipple, director of the Smithsonian Astrophysical Observatory, said there have been no indications the rocket of Sputnik I fell to earth in the United States or its territories...
...evasive maneuvers at hypervelocity. Instead of bulling its way to its target like a crude ICBM, a hyperspeed missile will either skip or glide. If it skips, it will climb into space about half as high as a ballistic missile of the same range. Instead of plunging down to earth, it will skip off the top of the atmosphere like a flat stone off the surface of a pond. By doing this several times, if necessary, it can reach a distant target over an unpredictable course. The glide missile is simpler. It merely climbs up 50 miles or more...
Space-minded strategists, some of them official, have plugged for satellites as orbiting dugouts from which operations might be conducted against the earth below. A relatively minor experiment that the Air Force told about last week showed that satellite-based aggression may not be so easy as it sounds. On the night of Oct. 16 a standard Aerobee research rocket was fired at Holloman Air Force Base, N. Mex. At 35 miles altitude the nose separated from the rest of the rocket and coasted up to 55 miles. Then the nose exploded, but in no ordinary way. Inside its aluminum...
...little air, they were probably slowed down considerably by it. But Dubin thinks that some of them may have reached outer space while still moving about 30,000 m.p.h. This exceeds the escape velocity (25,000 m.p.h.) that is necessary to carry an object beyond the pull of the earth's gravitation. Any particles that did escape moved into the sun's gravitational jurisdiction. They will either 1) be swallowed by the sun, or 2) move around it on elliptical, cometlike orbits...