If an astronaut on the International Space Station is in the Earth's shadow, what is the appearance of the sky?

Answer

It is entirely black.

When the ISS is in the Earth's shadow, the sky is entirely black because there is no direct sunlight available to penetrate and be scattered by the atmosphere overhead.

If an astronaut on the International Space Station is in the Earth's shadow, what is the appearance of the sky?
SpacecolorskyAstronaut