Question

Why sun appears reddish in early morning and can this be observed by astronauts on moon?​

Answer 1

Answer:

During the sunrise the sun is set close to the Earth’s horizon, and therefore light travels a longer distance through the atmosphere of the Earth. Particles suspended in the air distribute the light in shorter wavelengths such as blue. The long wavelength of the light that comes through the Earth is red colour. This is the reason sun appear reddish early in the morning.

The astronaut will not observe this phenomenon on the moon’s surface, because the moon has no atmosphere. Therefore no light will be distributed, and darkness will arise.

Answer 2

Answer:

During the sunrise the sun is set close to the Earth's horizon, and therefore light travels a longer distance through the atmosphere of the Earth. ... This is the reason sun appear reddish early in the morning. The astronaut will not observe this phenomenon on the moon's surface, because the moon has no atmosphere