The distance between the Sun and the International Space Station (ISS) is constantly changing because the ISS orbits the Earth, which in turn orbits the Sun.

Here's how to think about it:

* ISS Orbit: The ISS orbits the Earth at an altitude of approximately 400 kilometers (250 miles).

* Earth's Orbit: The Earth orbits the Sun at an average distance of 149.6 million kilometers (93 million miles).

Therefore, the distance between the Sun and the ISS is roughly equal to the distance between the Sun and the Earth, plus or minus the altitude of the ISS.

To be more precise, you would need to consider:

* The specific position of the ISS in its orbit around the Earth.

* The specific position of the Earth in its orbit around the Sun.

So, there's no single fixed distance between the Sun and the ISS. It's constantly changing!