Mercury is the smallest planet in our solar system and is known for its short years, long days, extreme temperatures and weird sunsets. Mercury is the smallest planet in our solar system and is known for its short years, long days, extreme temperatures and weird sunsets. read more
Mercury is the smallest of the eight planets and is closest to the sun. read more
Mercury's axis has the smallest tilt of any of the Solar System's planets (about 1 ⁄ 30 degree). Its orbital eccentricity is the largest of all known planets in the Solar System; at perihelion, Mercury's distance from the Sun is only about two-thirds (or 66%) of its distance at aphelion. read more