Apr 11 1957

From The Space Library

U.S.-IGY scientific satellite equipment, including a radio transmitter and instruments for measuring temperature, pressure, cosmic rays, and meteoric dust encounters, was tested above earth for the first time, as a rocket containing this equipment was fired by the Navy to a 126-mile altitude.

The Ryan X-13, a jet research plane capable of vertical takeoffs and landings, flown successfully through the complete flight sequence at Edwards AFB, Calif.