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.)
We should like to make a proposal that the average mean distance between the planet Mercury and the Sun be considered for computations of the astronomical unit. The average mean distance between Mercury and the Sun is generally cited as being 36 ,000,000 miles or, 57,900,000 kilometers.weet. The astronomical unit (AU) currently in use is derived from the average mean distance between the Earth and the Sun, which is generally cited as 93 ,000,000 miles or 149,600,000 kilometers.