2021 marks 60 years since NASA's Project Mercury got underway. A series of single-person spaceflights - the first of their kind for the agency - it aimed to prove whether the most basic human functions were possible in space. Could a human eat and drink in zero gravity? Could they sleep? Could they even survive?
Jim McDivitt and Ed White had been friends for years even before joining NASA, and now they were entrusted with the flight of Gemini 4 and the completion of the first ever American spacewalk.
Broadway musicals, corned beef sandwiches and seasickness aren't exactly things that immediately spring to mind when thinking of spaceflight, but they all nonetheless appear in the story of Gemini 3.
John Young is known for many things, namely landing on the Moon during Apollo 16 in 1972 and for commanding the first ever Shuttle mission in 1981. Less known, however, is the uproar he caused when he smuggled a corned beef sandwich into space in 1965.