COS-B launch
![](https://cdn.sci.esa.int/documents/33534/35212/1567215798846-COS-B_launch_1975_625.jpg)
Date: 07 August 2015
Satellite: COS-B
Copyright: NASA
COS-B was launched by NASA on behalf of ESA on a Thor Delta 2913 launch vehicle from the Western Test Range, California, on 9 August 1975.
Last Update: 1 September 2019
COS-B was launched by NASA on behalf of ESA on a Thor Delta 2913 launch vehicle from the Western Test Range, California, on 9 August 1975.