Template:Selected anniversaries/July 19: Difference between revisions

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||1963 – Joe Walker flies a North American X-15 to a record altitude of 106,010 meters (347,800 feet) on X-15 Flight 90. Exceeding an altitude of 100 km, this flight qualifies as a human spaceflight under international convention.
||1963 – Joe Walker flies a North American X-15 to a record altitude of 106,010 meters (347,800 feet) on X-15 Flight 90. Exceeding an altitude of 100 km, this flight qualifies as a human spaceflight under international convention.
||Alvin Cushman Graves (d. July 19, 1965) was an American nuclear physicist who served at the Manhattan Project's Metallurgical Laboratory and the Los Alamos Laboratory during World War II. After the war, he became the head of J (Test) Division at Los Alamos, and was director or assistant director of numerous nuclear weapons tests during the 1940s and 1950s. Pic.


||1977 – The world's first Global Positioning System (GPS) signal was transmitted from Navigation Technology Satellite 2 (NTS-2) and received at Rockwell Collins in Cedar Rapids, Iowa, at 12:41 a.m. Eastern time (ET).[1]
||1977 – The world's first Global Positioning System (GPS) signal was transmitted from Navigation Technology Satellite 2 (NTS-2) and received at Rockwell Collins in Cedar Rapids, Iowa, at 12:41 a.m. Eastern time (ET).[1]

Revision as of 06:50, 24 March 2018