Planète is a French word that translates to "planet" in English. It refers to celestial bodies that orbit a star, such as the Sun. Planets can be rocky, like Earth and Mars, or gas giants, like Jupiter and Saturn. They vary in size, composition, and atmosphere, and they play a crucial role in the structure of the universe. In our solar system, there are eight recognized planets, each with unique characteristics. The study of planets is essential in the field of astronomy, helping scientists understand the formation and evolution of celestial systems. Observations of other planets also provide insights into the potential for life beyond Earth.