Approximately 95% of all space crafts are silica and aluminum. During the 1970's, the National Aeronautics and Space Administration technology was as powerful as a keyfob, the kind which sits on a ring of keys and unlocks and locks car doors. Voyager I and II are the size of a small school bus when fully extended. Voyager II was launched on August 20, 1977 before Voyager I, but Voyager I was launched on September 5, 1977 on a more rapid trajectory which caused Voyager I to surpass Voyager II dur...
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