What is the basis for judging the revolution of the earth 5

There are four seasons throughout the year, with mornings and evenings throughout the day.

Why sidereal annual parallax proves that the Earth is revolving.

The earth revolves. It means that the earth revolves around the sun in a certain orbit. Simply put, it is the near-circular motion of the earth around the sun.

The cycle of the Earth's revolution is one year. There are two cycles of the Earth's revolution, which are the return year and the sidereal year.

The return year refers to the time interval between the two consecutive passes of the sun through the vernal equinox, that is, the time elapsed by the sun's center from west to east along the ecliptic from the vernal equinox to the vernal equinox, also known as the solar year. 1 return year is a day, or 365 days, 5 hours, 48 minutes and 46 seconds.

A sidereal year is a true cycle of the Earth's revolution, during which the center of the Earth starts from a point in the sky, orbits the Sun, and then returns to that point; If viewed from the Earth, it is the center of the Sun that cuts off the celestial sphere from the ecliptic (the plane of the Earth's orbit.

The resulting circle) departs from a certain point (a certain star) and runs on the week.

And then back to the same point (the same star). During a sidereal year, it takes about 365 days, 6 hours, 9 minutes and 10 seconds for the Earth to orbit 360°.

The earth revolves.

The direction of the earth's revolution moves counterclockwise, and the arrow pointing from left to right is the autumnal equinox, and vice versa. At this time, the first thing to determine is the summer solstice or winter solstice, the summer solstice is followed by the autumn equinox, and the winter nuclear attack solstice is followed by the spring equinox. Another point is to determine the direction of the Earth's revolution, which is counterclockwise if viewed from the North Pole and clockwise if viewed from the South Pole.

When the line between the Earth and the Sun is perpendicular to the Earth's axis, it is the day of the spring or autumn equinox, and the Sun shines directly on the equator. If the direct point of the sun is close to the northern hemisphere, then it is the vernal equinox, otherwise it is the autumnal equinox. Viewed from north to south, the Earth's revolution is counterclockwise.

If you don't know the direction of the Earth's rotation, you can only tell if it's a vernal or autumnal equinox, such as the relative positions of the Earth, the Sun, and other stars. It can also be judged by the direction of rotation of the earth, because the direction of rotation and revolution of the earth are the same.

The earth's rotation phenomenon is divided into four seasons: spring, summer, autumn, and winter; the phenomenon of the change in the length of day and night; changes in the height of the sun at noon; On the summer solstice, the sun shines directly on the Tropic of Capricorn, and the height of the global sun at noon gradually decreases from the Tropic of Cancer to the north and south.

The earth's revolution refers to the earth's rotation around the sun in a certain orbit. Just as the rotation of the earth has its own unique regularity, the rotation of the earth due to the action of the sun's gravitational field and rotation also has its own laws.

The rotation of the earth follows the laws of the earth's orbit, the earth's orbital plane, the yellow-red angle, the period of the earth's revolution, the speed of the earth's revolution and the effect of the earth's revolution. The time it takes for the earth to revolve is one year. There are two distinct cycles in the process of the Earth's revolution, which are the return year and the sidereal year, and the time of the return year is not the same as the sidereal year.

The one-year time difference between the two is called the precession.