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.)
Sometime in August, our planet reaches it's closest distance from the sun (Perihelion) with a distance of about 0.98 AU. Here, AU is short for Astronomical Unit which is defined as earth's average distance from the sun. Thus 1 AU = 92.956Ã10 6 miles = 149.6Ã10 6 km.