If the Earth had no atmosphere, what color would the sky appear even when the sun was shining overhead?

Answer

Black, even when the sun was shining directly overhead

Without an atmosphere to scatter sunlight, the sky would remain black, similar to the appearance of the sky on the Moon, even when the sun is directly visible.

If the Earth had no atmosphere, what color would the sky appear even when the sun was shining overhead?
Darknessweatherskyatmospherephenomenon