From the ISS, astronauts can see stars that are not visible from Earth's surface due to the interference of the atmosphere. They can also see stars that are too faint to be seen with the naked eye from Earth. This is because the ISS is located above the Earth's atmosphere, which blocks out much of the light from stars.
In addition to stars, astronauts can also see other objects in the night sky from the ISS, such as planets, moons, comets, and asteroids. They can even see the Milky Way galaxy and other galaxies.
The night sky from the ISS is truly a breathtaking sight, and it is one of the many things that makes space travel so special.