planets : In our universe, planets are spherical bodies that orbit a star, usually gravitationally bound, and shine by the reflected light from the star or by their own thermal emission. There are eight planets in our Solar System, namely Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. These planets vary significantly in size, composition and other properties such as atmosphere and magnetic fields.
The study of planets is an important aspect of astronomy and geology as they provide insights into the history and evolution of the Solar System, and are of significant interest in the search for life beyond Earth.
human body : The human body is a complex, intricate system of interconnected parts that work together to maintain our existence and function properly. From the brain, which controls and regulates our thoughts, feelings, and actions, to the heart, which pumps oxygen and nutrient-rich blood throughout our body, to the digestive system, which breaks down food and absorbs the essential nutrients we need to survive, each part of the human body plays a critical role in keeping us healthy and alive.
