Cloud seeding is the process of artificially generating rain by implanting clouds with particles such as silver iodide (AgI) crystals. Cloud seeding has been adopted by many countries to increase precipitation in areas suffering with droughts. In this experiment, cloud seeding will be examined for the first time in space under microgravity conditions. Moist air and AgI crystals will be mixed in a reaction chamber to examine the possibility of nucleation, where water vapor condenses on AgI crystals to form water droplets. The outcome of this experiment will help develop weather control technology to generate artificial rain in future human settlements on the Moon and Mars.