The distance between the Earth and the Sun is not constant, as the Earth orbits the Sun in an elliptical path.

* Average distance: 93 million miles (149.6 million kilometers)

* Closest point (perihelion): 91.4 million miles (147.1 million kilometers)

* Farthest point (aphelion): 94.5 million miles (152.1 million kilometers)

It's helpful to remember the astronomical unit (AU), which is the average distance between the Earth and the Sun. So, 1 AU equals approximately 93 million miles.