Mercury is the smallest planet of the solar system. It is also the closest planet to the sun as well. The equatorial diameter of Mercury is 4,880 km which is the least then any other planet in the solar system. Earlier it was Pluto which was known as the smallest planet in the solar system but after its exclusion from the solar system as a planet by the scientist, Mercury is declared as the smallest planet. Although Mercury is not smaller than pluto (Diameter=2274 Km) as its diameter is greater than Pluto. Mercury is smaller than earth (Diameter=12,756 km).
The Smallest Planet of Solar System
August 3, 2010 By Leave a Comment