Word: jastrow
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Dates: during 1960-1969
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...Robert Jastrow...
...infancy. The earth was formed some 4.5 billion years ago, but the slow, relentless process of its evolution wiped out all traces of its earliest years; the oldest known terrestrial rocks date back about 3.3 billion years. "What has happened during the missing 1.2 billion years?" wonders Astronomer Robert Jastrow, Director of NASA's Goddard Institute for Space Studies in New York. "We do not know; they are a blank page in the history of our planet. If the age of the rocks on the surface of the moon turns out to be 4.5 billion years, we may learn...
...course will feature lectures by leading physicists Robert Jastrow and Werner von Braun, which will be supplemented by field trips to space flight installations of the National Aeronautics and Space Administration...