Sep 052024
Orbiting Geophysical Observatory I
Orbiting Geophysical Observatory 1 was launched 1964. Five other Orbiting Geophysical Observatories were launched between 1965 and 1969. These satellites measured the earth’s magnetosphere and provided data about the earth and sun. The last of the six stopped operating in March 1972. Older children can learn more at: OGO.