Geon
Donor
Apollo 1
To build on Hyperion's comment here, with the Soviet manned space effort stumbling, one possible future butterfly might be averting the Apollo 1 disaster. One of the reasons given for the rush that caused all the fatal mistakes there was the fear that the Russians were close to attempting a Moon landing. Gagarin's death may cause a reassesment of the Russian space program and greatly slow their progress in it.
Geon
Might such a failure cause the US to not be so hurried about the Moon landings, if they know, or or at least think that they beat the Soviets into space with a person 1st?
To build on Hyperion's comment here, with the Soviet manned space effort stumbling, one possible future butterfly might be averting the Apollo 1 disaster. One of the reasons given for the rush that caused all the fatal mistakes there was the fear that the Russians were close to attempting a Moon landing. Gagarin's death may cause a reassesment of the Russian space program and greatly slow their progress in it.
Geon