The Sun is a huge fiery sphere around which the Earth revolves. The distance from the Sun to the Earth is about 150 million kilometers, yet it looks like a dazzlingly bright disk. And if you look for 2/1 minute, your eyes will look dark. It is safe to visit only in the morning or evening when the Sun is near the Dikchakrabal. At that time, the intensity of sunlight decreases slightly as it penetrates the dense air layer.

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What will the outer appearance of the Sun look like if the Earth moves further away? It will definitely look smaller. If viewed from a distance of tens of billions of kilometers, it would look like a tiny circle. As long as we look, our eyes will not be puzzled.

Farther away from the Sun, it would look like many other stars visible in a clear sky. Sun is a star. It looks so big because the world is so close. The other stars are each a Sun. Their distance from the earth is great.

Stars are fiery stars with heat of thousands of degrees. Every hot thing emits light—the flame of a lamp emits light, the hot white wire of an electric bulb; The earth became light with the light of lightning coming from the clouds. But any star holds much, much more heat than the source of a light bulb or light bulb. The distance of many stars from the earth is much greater than the distance of the sun from the earth - millions, even billions of light times, yet they are visible to our eyes. This proves that these fireballs of very bright zero?

There are other bodies in the sky that do not give off light themselves, but borrow and spread the light of larger stars. Mirrors will not burn when facing the sun, reflecting bright sunlight. That reflection is so sharp that it cannot be looked at. The reflection of the sun's rays in the mirror can be seen from far away, and soldiers use it to send signals.

Not only mirrors reflect sunlight; Sun rays are reflected from tables, from books, from glass reservoirs, from pictures on the walls, from plants-hills-mountains, from everything in the house and on the street, from everything. You can do a simple test. Close the window blinds or draw the curtains—darkness replaces a sunny room.

What is the darkness? If the sun's rays are not reflected from the surrounding objects and do not reach our eyes, we say it is dark. Now hold a candle or light the electric lamp. Again everything is seen, but not as clearly as it appears in the sunlight.

So we see non-luminous objects only because they reflect the rays of another luminous object and send them to us. Why does the reflection of the sun in the mirror puzzle our eyes? Why can't I look at other things illuminated by the same light, such as notebooks on the table or bed blankets, without discomfort?

Bright objects with shiny, smooth chests reflect the sun's rays and form alliances, and the tangle of these rays puzzles the eye. Objects with uneven surfaces reflect and scatter sunlight in different directions. A few rays at a time do not harm the eyes.

There are dark and cold bodies in outer space. Among them, the moon is the closest to us. So why is the moon visible? Because the sun's rays are reflected on the surface of the moon. The moon's surface is uneven, absorbing much of the sun's rays and scattering others, so only a few rays reach us.

What if the surface of the moon was like a mirror? Then the reflection of the sun would be unbearable bright, it would not be possible to look at it. The Moon actually reflects very little light, its luminosity being 437,000 times less than that of the Sun. You may say, 'But the moon appears to us as a bright, shining circle or sickle. Many things can be seen in the light of the moon and can be seen far away in the moonlit night.'

It's true. His explanation: The moon is a large void. Its surface covers millions of square kilometers and very little of the sun's rays are reflected towards the earth, but there are several rays in that part. Therefore, the moon's disk is shining bright to us.

Sunlight that reaches our eyes on a bright moonlit night is reflected twice: first, from the moon and second from objects illuminated by the moon, that is, objects visible to us. The Earth reflects 6 times more light than the Moon. When seen from the moon, the earth appeared to be 15 times bigger and 80 times brighter than the moon. But how did the scientists measure the light that the earth reflects, that is, the brightness of the earth?

At new moon, when the small, narrow, crescent-shaped moon has an almost imperceptible silvery glow on its unlit side. The aura is the light of the earth on the moon, the moon reflects the light coming from the earth. The silvery glow of the Moon is a pattern of twice reflected rays from the Earth's chest to the Moon, reflected from the Moon to the Earth.

As the moon grows in size, its bright rays fade to a soft silvery glow, and we don't see it. Astronomers have been able to judge the brightness of the Earth by measuring the brightness of the silver glow sent from Earth.

If you look at the earth from the moon, it will look like a beautiful glowing body. The order of the solar system, i.e. the distance from the sun, is the list of its planets: Mercury, Venus, Earth, Mars—these are called interplanetary planets; Jupiter, Saturn, Uranus, Neptune and Pluto are exoplanets. All except Mercury, Jupiter and Pluto have satellites.