Venera 14 soil test measured compressibility of lens cap
By The BriefBrief
On 5 March 1982, Venera 14 photographed Venus terrain and lowered its soil arm onto its ejected lens cap.
WHO:Venera 14 lander (Soviet space program)
WHAT:Venera 14 ejected a camera lens cap, photographed terrain, then lowered its soil-testing arm onto the discarded lens cap to measure compressibility.