Word: solar
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Dates: during 1950-1959
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...stations in California, New Mexico, Michigan and Washington, D.C., the Aerobee's photographs give astronomers a sort of three-dimensional picture of the violent energy processes in the sun's atmosphere. Eventually, such rocket photography may become so refined that meteorologists may be able to make daily solar weather reports as a matter of routine to help them predict earth's weather...
...second year in regions where huge Russian satellites have long since died. Vanguard's orbit, which climbs up to 2,500 miles and never comes lower than 400 miles, has hardly changed. Vanguard I has traveled something over 132 million miles. Its clear radio voice, powered by solar batteries, is still chirping as cheerily as ever, is expected to hold out for at least 200 years...
...planet, a gold-plated fiberglass cone weighing 13.4 Ibs., did not compare in weight with the 796-lb. Lunik that the Russians put into solar orbit early in January, but its instruments apparently worked much better. The signal from its tiny transmitter was so strong that the 250-ft. radio telescope at Jodrell Bank, England could have followed it 4,000,000 miles into space if its batteries had lasted. The Russians reported that they lost their Lunik's signal (which no one else had followed) at 370,000 miles...
WASHINGTON, March 4--America's Pioneer IV shot past the moon late today and headed for a solar orbit scientists say will last as long as the universe does...
...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...