The Soviet LK lunar cabin, designed for a single cosmonaut, weighed approximately 12,257 pounds—about one-third the weight of the Apollo lunar module.
Notes on verification
Mass figures corroborated by Astronautix and Wikipedia; single-cosmonaut design confirmed by multiple sources; 'about one-third' comparison to Apollo LM is a fair approximation (~36-38%). [cascade flags: wikipedia_dropped_other_sources_exist | tier=unverified indep_score=0.375 clusters=1 claim_tier=notable] [kind-backfill 2026-09-16: kind=empirical eligibility=high] [harvest 2026-09-26: +2 source(s) on new hosts; tier unverified->silver indep=0.63 clusters=2]
Sources
- The First True Spaceship (seed:science_and_space)
- http://www.astronautix.com/l/lk.html (corroboration)
- https://www.globalsecurity.org/space/world/russia/n-1-lk.htm (corroboration)
- https://www.globalsecurity.org/space/library/report/2007/deep-politics-1-1.htm (corroboration)