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Hi! Even in the distant past, many people thought about why the length of the day and night is constantly changing, why cold is replaced by heat and why this is repeated from year to year. For a long time, the great minds of the past thought about it, and only in the XVI century, modern theories about the Earth's rotations began to dominate. You will learn more about these theories in this chapter.

So, today we know for sure that the Earth participates in two rotations — axial and orbital.

Read in the textbook about the angle of inclination of the earth's axis and insert the correct numeric value.

The Earth moves around its axis, the axis leans at an angle (angle is the figure formed by two rays meeting at a common endpoint) [ ] degrees to the plane of the orbit.