Word: silicon
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Dates: during 1960-1969
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...addition to the flag, the astronauts left behind a number of mementos from the earth. There was a 1½-in. silicon disk bearing statements (reduced in size 200 times) by Presidents Eisenhower, Kennedy, Johnson and Nixon, and words of good will from leaders of 72 different countries. The disk also bore a message from Pope Paul VI quoting from the Eighth Psalm, a hymn to the Creator...
...Silicon Gas. Everyone is aware that Presidents Grant and Eisenhower passed through the Point, but there were also artists, scientists and businessmen. George Goethals built the Panama Canal, Henry du Pont became an industrialist, and Robert Wood became president of Sears, Roebuck. Edgar Allan Poe, on the other hand, was court-martialed for "gross neglect of duty," and James Whistler failed his chemistry exam. "If silicon were a gas," he said later, "I would be a major general today...
Before they depart, the astronauts will leave behind three items of symbolic import: a 3-ft. by 5-ft. U.S. flag stiffened with thin wire so that it will appear to be flying on the windless surface of the moon; a silicon disk bearing good-will messages for posterity from world leaders, including President Tito, Pope Paul and Queen Elizabeth; and a metal plaque bearing the names not only of the three astronauts, but also of President Richard M. Nixon, a fact that has stirred some criticism...
...virtually the same as the basaltic rock that forms the ocean floors and is found in such widely scattered locations as the Hudson River Palisades, the Brazilian Plateau, the Hawaiian Islands and India. Like its counterpart on earth, the lunar material consists largely of oxygen (58%) and silicon (18.5%). It also contains aluminum (6.5%), iron-nickel (5.5%), magnesium (3%), and smatterings of carbon...
Bright Core. There are other unusual features of 0237-23. The spectra of most quasars show the presence of only lighter elements, such as hydrogen, helium and silicon. The spectrum of 0237-23 shows that the expanding gas shells contain titanium and probably chromium, nickel, cobalt and iron-heavy elements never before detected in quasars...