Surface gravity
Surface gravity refers to the gravitational acceleration experienced at the surface of a celestial body, such as a Planet, Moon, or Asteroid. It is a fundamental concept in Astrophysics and Planetary science, as it determines the strength of the gravitational pull on objects at the surface. The surface gravity of an object depends on its mass and radius, and is typically measured in units of acceleration, such as meters per second squared. For example, the surface gravity of the Earth is approximately 9.8 meters per second squared, while the surface gravity of the Moon is about one-sixth of this value. Surface gravity plays a crucial role in shaping the Geology and Atmosphere of a celestial body, and is an important factor in determining the Habitability of a planet.