What do you know about the sun?
of rotation of sun and
There are two typesplanets and stars. One is subject to its own axis. Its academic name is rotation
. For example, the earth rotates once per day on its own axis. In the case of the earth, this rotation is also called
diurnal motion. And the rotation that centers on something else is called
revolution. As the earth revolves around the sun, once it revolves, it is one day.
The difference between rotation and orbit As
we said earlier, the sun revolves around the center of our Milky Way galaxy. Speed 6 lakh kilometers or 5 lakh miles per hour. It takes about 250 million years for the sun to orbit the entire galaxy at such a high speed.
It takes 25 days for the sun to rotate once on its own axis.
In the solar system, the central object, the sun, is a medium-sized star. It takes about 25 days for the sun to rotate once on its own axis.
Why do the stars flicker at night?
There are countless stars in our universe that we call 'stars'. As scientists, our galaxy alone, the Milky Way, has about 200-300 billion stars. We are fascinated to see so many stars in the night sky, even though they are not seen during the day. But whatever it is, when we see these stars in the night sky, it seems that the stars are flickering and burning. But why do these stars blink? However, they are very small because they are located at a great distance. We see even relatively few stars. The rest of the stars are so far away that light disappears as they come in from those stars. The main reason behind the twinkling of stars is the reflection of light. In order to reach the earth by crossing such infinite distances, the light coming from them has to penetrate the earth's atmosphere and come to the earth's surface. So when it enters the atmosphere, the medium changes its path, in short, light enters the air medium from the zero medium. Again, the concentration of gas throughout the atmosphere is not the same. Somewhere the atmosphere is lighter and somewhere relatively dense. That is why the light rays coming from them have to be reflected again and again to come through the atmosphere and change direction again and again. And our atmosphere is not stable. Its various layers are constantly cut. As a result, when the light of the stars reaches the earth's surface, it seems that it is sometimes burning and sometimes extinguished. Because of these phenomena in the atmosphere during the journey of star light, we see the stars in the night sky flickering and burning without being fixed.