Small spacecraft, also known as CubeSats or nanosatellites, are miniature satellites with a mass typically ranging from a few kilograms to a few hundred kilograms. These spacecraft are increasingly being used for a wide variety of scientific, commercial, and educational purposes, due to their relatively low cost, fast development times, and versatility. Small spacecraft can be launched as secondary payloads on larger rockets, or deployed from the International Space Station. They are used for a diverse range of applications, including Earth observation, technology demonstrations, communication, and scientific research. Some small spacecraft are even being used for interplanetary missions to explore other planets and moons in our solar system. Overall, small spacecraft are revolutionizing the space industry by enabling more frequent and affordable access to space for a wide range of users, and are leading the way for new innovations and discoveries in space exploration.