To summarize, science becomes knowledge by publication of research results. It then may become more general knowledge as writers of textbooks pick and choose what to put in their texts, and as professors and teachers then decide what to stress from those textbooks.
The Hughes H-4 Hercules (also known as the  Spruce Goose ; registration NX37602) is a prototype heavy strategic airlift military transport aircraft designed and built by the Hughes Aircraft Company.oward Hughes was called to testify before the Senate War Investigating Committee in 1947 over the use of government funds for the aircraft. During a Senate hearing on August 6, 1947 (the first of a series of appearances), Hughes said: The Hercules was a monumental undertaking.
To supersede its U-2 spy plane, Lockheed developed the top-secret, stealthy SR-71 Blackbird, the world's fastest jet-propelled aircraft, one of which is displayed here. The Cold War ended with the peaceful collapse of the Soviet Union in 1991, and relations between the former adversaries began to warm.