A "Rocket Scientist" is a professional who specializes in the design, development, and testing of rockets and spacecraft. They apply principles of physics, engineering, and mathematics to create vehicles that can travel into space. Their work is crucial for missions that explore outer space, including those conducted by organizations like NASA and SpaceX. These scientists often hold advanced degrees in fields such as aerospace engineering or astrophysics. They collaborate with teams to solve complex problems, ensuring that rockets can safely launch, navigate, and return to Earth. Their contributions are vital for advancements in space exploration and technology.