Protoplanets are young celestial bodies that are formed in the early stages of a planetary system's formation. They are typically composed of dust, gas, and other materials that have come together through gravitational attraction. Protoplanets are considered to be the building blocks of planets, as they eventually coalesce and evolve into larger, fully-formed planets over time. Studying protoplanets can provide valuable insight into the processes of planetary formation and evolution. This research area is crucial for understanding the origins of our own solar system and the potential for habitable planets in other systems.