Gemini was actually more cramped than Mercury. It had 160% the habitable volume of Mercury, but twice the crewmembers. Gemini was known as the Gusmobile, beca

Gemini was actually more cramped than Mercury. It had 160% the habitable volume of Mercury, but twice the crewmembers. Gemini was known as the Gusmobile, because Gus Grissom basically lived at McDonnell during its development and tailored the design to his own preferences. And really tailored. Because Gus Grissom was the shortest astronaut at 5'5" (1.65 meters), Gemini turned out to be uncomfortable for everyone else.