Question

explain:
a)an astronaut in space finds sky to be dark
b)sun looks reddish at the time of sunrise and sunset

Answer 1

1) Blue light is scattered in all directions by the tiny molecules of air in Earth's atmosphere. Blue is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time. ... Also, the surface of Earth has reflected and scattered the light. So sky is dark in real , astronauts see space from above the earth's atmosphere.

2) Sun is white actually and it appears reddish cause

During sunrise and sunset, the rays have to travel a larger part of the atmosphere because they are very close to the horizon. Therefore, light other than red is mostly scattered away. Most of the red light, which is the least scattered, enters our eyes. Hence, the sun and the sky appear red.


Hope that helps you ⭐⭐⭐⭐!

Answer 2

a)because he was was out the space so the sky looks black
b)the time of sun rise in early morning and evening the amount of ozone is more so UV rays were not come so it looks reddish some time orange,pink,etc