KSP: Pioneer 3

Pioneer-3 is lunar probe, but it didn't reach the moon and fall back into atmospere. Upper stage based on solid fuel rockets is simmilar to Explorer-1 satellite.

Mods: https://github.com/KSP-RO
Wiki:
https://en.wikipedia.org/wiki/Pioneer_3
https://en.wikipedia.org/wiki/Juno_II
https://en.wikipedia.org/wiki/Explorer_1

Видео KSP: Pioneer 3 канала deadlymecury