Question

Что такое небо? Обьясните пожалуйста!!!!!!!!!!!

Answer 1

Небо — пространство над поверхностью Земли или любого другого астрономического объекта. В общем случае — панорама, открывающаяся при взгляде с этого объекта в направлении космоса.

Answer 2

What is the sky?

The sky is the expanse of space that appears above the Earth. It is the atmosphere and outer space as seen from the surface of our planet. The sky is characterized by its blue color during the day and the presence of stars, planets, and other celestial objects at night.

The Composition of the Sky

The sky is composed of several layers, including the troposphere, stratosphere, mesosphere, thermosphere, and exosphere. Each layer has its own unique characteristics and plays a role in the Earth's atmosphere.

The troposphere is the lowest layer of the atmosphere and is where weather phenomena occur. It extends from the Earth's surface up to an altitude of about 7 to 20 kilometers (4 to 12 miles) depending on the location.

Above the troposphere is the stratosphere, which extends from the top of the troposphere to an altitude of about 50 kilometers (31 miles). The stratosphere contains the ozone layer, which absorbs much of the Sun's ultraviolet radiation.

The mesosphere is the layer above the stratosphere and extends up to an altitude of about 85 kilometers (53 miles). It is the coldest layer of the atmosphere.

The thermosphere is the layer above the mesosphere and extends up to an altitude of about 600 kilometers (373 miles). This layer is characterized by high temperatures due to the absorption of solar radiation.

Finally, the exosphere is the outermost layer of the atmosphere, where the atmosphere gradually transitions into space.

The Appearance of the Sky

During the day, the sky appears blue due to a phenomenon called Rayleigh scattering. The Earth's atmosphere scatters shorter-wavelength blue light more than longer-wavelength red light, causing the blue color to dominate our perception of the sky.

At night, when the Sun is no longer visible, the sky is dark, but it is not completely black. It is filled with stars, planets, and other celestial objects that emit or reflect light. The appearance of the night sky can vary depending on factors such as light pollution and atmospheric conditions.

Conclusion

In summary, the sky is the expanse of space above the Earth's surface. It is composed of different layers of the atmosphere and appears blue during the day due to Rayleigh scattering. At night, the sky is filled with stars and other celestial objects.