There are 8 planets in our solar system: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Mercury is the smallest planet and closest to the sun. Venus is the hottest planet with thick clouds surrounding it. Earth takes 365 days to orbit the sun and is the only planet that supports life. Mars is similar to Earth but has deserts and canyons and is called the red planet. Jupiter is the largest planet and over 11 times bigger than Earth. Saturn is the second largest planet and has distinctive rings. Uranus is made of ice and gases and Neptune is the farthest and coldest planet from the sun.