Mercury Planet. 3.7 m/s 2 (38% of earth’s gravity) mass: Despite its closeness to the sun, it is not the hottest planet, that title belongs to venus but mercury is the fastest planet, completing a trip around the sun in 88 earth.
4879 km (0.38 earths, or 1.40 moons) surface area: Mercury is the smallest and fastest planet in the solar system.
