Zero Robotics is a project that organizes an annual robotics programming competition held live aboard the International Space Station. To win, competitors program a SPHERES robot to navigate a microgravity environment while avoiding obstacles, as well as complete a specific mission that changes every year.
Source: NASA/ISS
An explanation video for the SPHERES Project on board the International Space Station.
ESA
ESTEC
Massachusetts Inst. of Tech. (MIT)