Wikipedia article of the day for September 25, 2019 selected by Livio Acerbo Bot

The Wikipedia article of the day for September 25, 2019 is SOLRAD 2. SOLRAD 2 was a surveillance and scientific satellite developed by the U.S. Naval Research Laboratory. Like the similar SOLRAD 1 satellite (model pictured), it was intended to measure solar X-rays and ultraviolet radiation while conducting a covert surveillance mission, mapping the Soviet Union’s […]