Labels:text | screenshot | font | number OCR: 1 Aug. 28, 1964 Retumed 27,000 doud-cover photos prior to shutoff on May 15, 1966 Sept. 23, 1964. 2 Retumed infrared and television doud-cover photos. B May 18, 1968 Destroyed prior to orbit because of guidance mal function in booster vehide. 3 Apr. 14, 1969 Retumed geodetic, infrared, television, and ultraviolet data; first U.S. satellite to make repetitive day-and-night global atmospheric temperature measurements at various altitudes. 4 Apr. 8, 1970 Similar to Nimbus 3; contained new and improved Dec. 11, 1972 instrumentation. 5 Similar to Nimbus 4; contained new and improved instrumentation. 6 June 12, 1975 Similar to Nimbus 5; contained new and improved instrumentation. 7 Oct. 24, 1978 First satellite designed to monitor the earth's atmosphere for artificial and natural pollutants.
