A map of the Mid-Atlantic Ridge. The Mid-Atlantic Ridge (MAR) is a mid-ocean ridge, a divergent tectonic plate or constructive plate boundary located along the floor of the Atlantic Ocean, and part of the longest mountain range in the world.
Since the distances are so large, we usually express them in Astronomical Units (AU). (An AU is the average distance from Earth to the Sun, about 150 million kilometers or 93 million miles.) The table below lists the distance of each planet from the Sun in AU. (Numbers were taken from this page.)
The average distance from the Earth to the Sun is the unit of distance used for Solar System studies. It is called 1 Astronomical Unit (AU).n 1672 Cassini used the parallax of Mars to determine the distance to the sun. The result (140 million kilometers or 87 million miles) was within 10% of the correct answer.