Question

To an astronaut, why does the sky appear dark instead of blue? [2 MARKS]

Answer 1

Each point: 1 Mark

1. Since the Earth has atmosphere it leads to scattering of white sunlight into its constituent colours. And since the blue light gets most scattered, the sky appears blue.

2. But in space, there is virtually no atmosphere so no scattering of sun light, thus for an astronaut sky appears dark.