Earth at Aphelion

[anam_moon]

On the 4th of July, you will be farther from the sun than at any other time of the year. Earth's orbit around the sun is not a perfect circle, it's an ellipse, and on July 4th, Earth is at the end of the ellipse farthest from the sun. Astronomers call this "aphelion." When we are at aphelion, the sun appears slightly smaller in the sky (by about 1.7%) and global solar heating is actually a little less (by about 3.5%) than the yearly average.