What is SKY ?

The sky is everything which lies above the surface of the Earth, including the atmosphere and the outer space.

The term sky refers to a perspective from the Earth's surface, however, it's meaning and use can vary.

An observer above the surface of the Earth can see the small part of the sky, which resembles a dome appearing flatter during the day than at night.

In some cases, such as in discussing the weather, the sky refers to only the lower, denser layers of the atmosphere.

The daytime sky appears blue since its air molecules scatter shorter wavelengths of sunlight more than longer ones.

The night sky appears to be a mostly dark surface or region spangled with stars.

The Sun and sometimes the Moon are visible in the daytime sky unless obscured by clouds.

At night, the Moon, planets, and stars are similarly visible in the sky.

Some of the natural phenomena seen in the sky are clouds, rainbows, and aurorae.

Lightning and precipitation are also visible in the sky. Certain birds and insects, as well as human inventions like aircraft and kites, can fly in the sky. Due to human activities, smog during the day and light pollution during the night are often seen above large cities.

Thanks for watching. Please like share and subscribe.