Soyuz modules are vital to the Russian space program . NASA : The trip back to Earth should take two hours . One American and less than three and a half Russian will land 8:30 p.m . ET . Russians Soyuz space modules have proven very reliable . It is the standard transportation mode to the ISS after a deadly space shuttle crash .
NASA : The trip back to Earth should take two hours . One American and less than three and a half Russian will land 8:30 p.m . ET . Russians Soyuz space modules have proven very reliable . It is the standard transportation mode to the ISS after a deadly space shuttle crash .