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Mercury is the closest planet to the sun . Mercury is a very small planet. There is no life on Mercury. http://www.schoollasti cs.com Venues is the same size as the Earth. Venues is considered to be the Earth sister. Venues is red. http://planetfacts.org Earth is the same size as Venues. Earth is the only planet with life on it. Earth is 70% water and 30% land. http://planetfacts.org A day in Mars is equal to24.6 Earth hours. Mars is 35 million miles form Earth. A Mars year is equal to 686.98 Earth days. http://planetfacts.org A year on Jupiter is equal to9.8 Earth years. A year on Jupiter is equal to 11.39 Earth years. The orbital speed of Jupiter is 13.1km/sec. http://ploanetfacts.org A day on Saturn is equal to 10 hours and 14 minutes. A day on Saturn is equal 29.5 Earth years. The diameter of Saturn is 110,871 km. http://planetfacts.org The diameter of Uranus is 51,488 km. Uranus is the second least dense after Saturn. The orbital speed of Uranus is 6.6 kg sec. http://planetfacts.org Neptune is the fourth largest planet in the solar system. In Roman mythology the god of the seas. The diameter of Neptune is 49,493 km. http://planetfacts.org