Gemini 2 was the second spaceflight of the american human spaceflight program project gemini. gemini 2, like gemini 1, was an unmanned mission intended as a test flight of the gemini spacecraft. unlike gemini 1, which was placed into orbit, gemini 2 made a suborbital flight, primarily intended to test the spacecraft's heat shield. it was launched on a titan ii glv rocket. the spacecraft used for the gemini 2 mission was later refurbished, and was subsequently launched on another suborbital flight, along with ops 0855, as a test for the us air force manned orbital laboratory. gemini 2 was the first craft to make more than one spaceflight since the x-15, and the only one until space shuttle columbia flew its second mission in 1981.