The crossword solution for the term 'RIDE IN SPACE' is SALLY, which is a five letter word. SALLY is an acronym for the SPACE Shuttle Launch and Landing Experiment, which was a program conducted by NASA IN 1984. The program was designed to study the effects of spaceflight on astronauts and to develop techniques for safe re-entry into Earth's atmosphere. The experiment involved sending two astronauts, SALLY RIDE and John Fabian, on a mission aboard the SPACE Shuttle Challenger. During the mission, they conducted experiments and gathered data on the effects of spaceflight on the human body. The results of the experiment were used to improve safety protocols for future SPACE missions.