Because there is no atmosphere in space, the International Space Station, space shuttles, lunar satellites and astronauts on the moon receive much more direct sunlight.
Very bright, very bright, “you must protect your eyes” type light.
In the age of selfies and Instagram, we all know how cameras work, don’t we? If you point it at something bright, the camera will automatically focus on the brightest light source (such as a spacesuit, a lunar vehicle, a big hill covered with white moon dust) and will not focus much on the background where the much fainter stars are.