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The Eight Planets of our Solar System - All Things Topics

The Eight Planets of our Solar System Name: Mercury Distance to sun: about 58 million km Moons: none Diameter: 4,879 km at the equator Mercury is the planet in our solar system that is closest to our sun. Named after the Roman god Mercury who was the messenger to the gods, it is the smallest planet, and is very difficult to see because it is so close to the sun.