This was neither first, nor highest nuclear explosion in space[0]. There was a good reason they stopped detonating nuclear weapons at high-attitudes. [0] See A

This was neither first, nor highest nuclear explosion in space[0]. There was a good reason they stopped detonating nuclear weapons at high-attitudes. [0] See Argus III. http://en.wikipedia.org/wiki/High-altitude_nuclear_explosion http://en.wikipedia.org/wiki/High-altitude_nuclear_explosion