Word: earthly
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Dates: during 1950-1959
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...pass came at 5:24 p.m. EST. Scientists calculated the 13-pound cone came within 37,000 mles of the moon. At the time, government scientists said, the gold-plated vehicle was 236,000 miles from earth...
...practical purposes Pioneer already is in orbit around the sun--the pull of solar gravity on the space probe now is greater than that of the earth...
...bullet-shaped Juno II is a modified Jupiter intermediate range ballistic missile topped by three stages of spinning Sergeant rockets. The whole assembly as it left the earth was 76 feet long and weighed about 60 tons with its fuel...
...rocket was launched early this morning carrying Pioneer IV, a potential sun planet. The goal of Army scientists was to hurl a 13-pound gold-plated satellite past the moon, 221,000 miles away, in 34 hours and ultimately into a solar orbit a half million miles from earth...
...silicon monoxide to keep it at proper temperature in sun or shadow, was put into a spin of about 50 r.p.m. The spin made it act like a gyroscope, keeping its axis always pointing in the same direction in space. At its perigee, the axis is parallel to the earth's surface. But a quarter of a revolution later the axis points vertically at the earth (see diagram). At apogee, the axis is parallel again...