The solar system and the change of day and night!
When many planets revolve around a star in a particular circle, it is called a solar system. Since the sun is a star and our earth revolves around the sun. There are eight planets orbiting the sun, including Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Earth is the third closest planet to the Sun, orbiting the Sun at a speed of 30 kilometers per second. That is, the speed is enough to cover 67,000 miles per hour. The earth completes one revolution around the sun in 365 days, and so a year passes. The earth revolves around the sun in an elliptical shape, which is also related to the change of seasons.
Q:why do we have day and night?
In addition to this, the earth is also rotating in its orbit, that is, it also revolves around itself, which changes the day and night. Think of this rotation in such a way that just as a bowler throws a ball, it spins and moves forward, just as the earth revolves around the revolving sun. The speed of its orbit is 460 meters per hour and the earth completes one cycle in 23 hours and 54 minutes which is counted as 24 hours.
Since the earth is round, only half of it is in front of the sun, on which the sun shines. Half of the sunlight falls on day and the other half falls on night. In the same way, when the earth rotates, the night part gradually comes to the fore and when light falls there, it becomes day. While the rest is night. Thus day and night change as the earth rotates.
These are the causes for day and night on Earth.
Solar system picture
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