What is the distance between the earth and the sun?
The distance from the Earth to Sun is not Constant. The average distance is 149 million Kms or 1 Astronomical Unit(AU).
The Distant between Earth and SUn is not constant because warth orbits the sun in an elliptical path. So, some times it is further away from the sun and some times it is closer. However, the distance from earth to the sun is given as an average of the two distances. At perihelion(When Earth is closer) the distance is about 146 million Kms. At aphelion(When Earth is further away) the distance is about 152 million Kms. However, the average of these two numbers gives us 149 million Kms or 1 Astronomical Unit(AU).