Mercury: Facts about the smallest planet

Mercury is the closest planet to sun and the smallest planet in solar system. With a diameter of about 3,032 miles (4,880 km), Mercury is less than half the size of The earth, is about 7,926 miles (12,756 km) in diameter. But what Mercury lacks in size, it makes up for in speed: It orbits the sun faster than any other planet in the solar system.

How did Mercury get its name?

The planet is named after the Roman god Mercury, the speedy messenger of the gods, the Greek equivalent of the Greek god Hermes. Mercury orbits our Sun once every 88 days – faster than any other planet in the Solar system – and a year on Mercury is less than three Earth months. This rapid orbit inspired the ancient Romans to associate the minor planet with Mercury, according to Cool Cosmosa website run by the Center for Infrared Processing and Analysis at the California Institute of Technology, while the ancient Greeks associated the planet with Hermes, according to European Southern Observatory. Mercury: Facts about the smallest planet

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