What is lander probe?

A lander probe is a type of spacecraft designed to land on the surface of a celestial body, such as a planet or moon, to conduct scientific research and gather data. Unlike orbiters, which remain in space and study the body from afar, landers are equipped with instruments to analyze soil, atmosphere, and other surface features directly. They often deploy scientific instruments, cameras, and sometimes even rovers to explore their surroundings. Examples include the Mars landers like Viking, Phoenix, and Perseverance.