10. Gemini III introduced the corned beef sandwich to spaceflight
When Gus Grissom was recovered from the second manned American spaceflight his Mercury capsule was lost to the sea (it was recovered decades later). Because of the incident, Grissom named the first manned Gemini mission’s spacecraft Molly Brown, after the survivor of the Titanic sinking. It was the only officially named capsule of the Gemini program, all of the other missions were identified by their mission number. Grissom and his co-pilot, John Young, also violated NASA rules when it was revealed that Young had smuggled a corned beef sandwich aboard, in a pocket of his spacesuit, which both astronauts sampled during the three orbit flight before realizing that the crumbs released into the atmosphere were potentially dangerous to equipment.
The flight was not without problems, which were observed by the astronauts and reported to Mission Control. An inflight experiment failed because of a damaged piece of equipment involved in it and the capsule developed a continuous drift to the left due to equipment venting. While the capsule was descending following re-entry it shifted abruptly under the parachutes, causing Grissom to strike his helmet faceplate on a control panel with enough force to crack it, which led to a change of material for all future helmets. The crew overshot their landing area by more than 80 miles and Grissom, understandably given his earlier experience, left the hatch closed until approached by Navy divers.