Making History or stock could include the set of parts representing the very first version of the Soviet manned spaceship, tested on Belka & Strelka as Sputnik-5.. This is how originally the first spaceship should look like, before they reworked it in Vostok.   Total mass = 4540 kg. Cabin mass (the conical/cylindric part inside the external hull, with the square window) = 2500 kg Equipment, including power sources (electricity, RCS, retrorocket, sensors) = 1477 kg. Radio