Hot-staging is amazing tech. It's odd how Russia is so good at rocket science. Until Falcon, they had the highest thrust-to-weight engine, Soyuz is insanely rel

Hot-staging is amazing tech. It's odd how Russia is so good at rocket science. Until Falcon, they had the highest thrust-to-weight engine, Soyuz is insanely reliable at this point, and they generally just punch above their financial weight class.