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.
Airbus' A320neo made its maiden flight, with two Pratt & Whitney engines on its wings. A version of Pratt & Whitney's latest commercial engine took its maiden flight Thursday on a new Airbus plane in Toulouse, France. The blue and white A320neo, a single-aisle aircraft, made its milestone first flight Thursday at noon local time, or 6 a.m. Eastern Time. It climbed to 6,000 feet, then to 26,000 feet, before landing 2 1/2 hours later.