You're right! When astronauts go above the Earth's atmosphere, they see a black sky. Here's why:

* The Atmosphere is What Makes the Sky Blue: The blue color of the sky we see from Earth is caused by a phenomenon called Rayleigh scattering. Sunlight is scattered by the tiny molecules in our atmosphere, and blue light is scattered the most.

* Space Has No Atmosphere: Above the atmosphere, there's no air to scatter sunlight. Without this scattering, we see the true color of space, which is black.

* Stars and Planets are Visible: In the blackness of space, astronauts can see stars and planets much more clearly than they can from Earth. This is because there's no atmospheric haze or light pollution to obscure them.

Let me know if you have any other questions about space!