Orbiting Geophysical Observatory

Orbiting Geophysical Observatory (OGO) Program of NASA refers to the six satellites launched by the United States that were in use from September 1964 to 1972, designed to study the Earth's magnetosphere. The satellites successfully studied the interactions between the Earth and the Sun, despite a number of technical problems. Each satellite had 20 to 25 instruments. OGO 1, OGO 3, and OGO 5 were in equatorial orbits; OGO 2, OGO 4, and OGO 6 were in lower polar orbits.

• WW2 Cargo Pilot Wilfred "Bill" Scull was the project manager for all 6 OGO projects. His biography is detailed in a 3-book series. WW2 Cargo Pilots series along with many other photos of the projects, including hand-drawn sketches of the satellites.