It's not quite accurate to say Earth travels a specific number of miles around the sun. Here's why:

* Earth's orbit is elliptical: It's not a perfect circle, so the distance varies throughout the year.

* Distance is constantly changing: Earth is closest to the sun (perihelion) in January, and farthest (aphelion) in July.

Instead of miles, we talk about the average distance Earth travels in its orbit. This is called an astronomical unit (AU):

* 1 AU = 93 million miles (150 million kilometers)

So, while we can't say exactly how many miles Earth travels, we know it travels roughly 584 million miles (940 million kilometers) each year on average.