How does the position of the constellation change _ the law of the position change of the constellation

Aries March 21-April 20 Taurus April 21-May 20

Gemini may 2 1-June 21cancer June 22-July 22.

Leo July 23rd-August 22nd Virgo August 23rd-September 22nd.

Libra September 23rd-65438+1October 22nd Scorpio 65438+1October 23rd-165438+1October 2nd1.

Sagittarius165438+1October 22nd-65438+February 2nd1Capricorn 65438+February 22nd-65438+1October 19.

Aquarius 65438+1October 20th-February 18 Pisces February19-March 20th.

In short, the arrangement of constellations means that the constellations appearing in the sky will change due to the revolution of the earth all year round.

The order is arranged according to different seasons and the time when individual constellations rise to the zenith. There are 88 constellations in the sky, which are roughly divided into four groups, namely spring constellations, summer constellations, autumn constellations and winter constellations.

Why do the starry sky change in spring, summer, autumn and winter? This is because when the earth revolves around the sun, the side facing away from the sun is the starry sky we can see in the season that night. As the earth rotates around the sun, it gradually changes its position, so the starry sky in the background slowly changes.

For example, in February 1, we went to watch the stars. After dusk, the constellations we see on the western horizon are Aquarius, Pegasus and Pisces, while Perseus, Aries, Auriga, Taurus and Lahu are high in the sky.

By the beginning of May, we were watching the stars in the same place. After dusk, the constellations on the western horizon have become Perseus, Taurus and Lahu, and the constellations in the middle of the sky are Cancer, Leo and Ophiuchus.

In early August, at the same time and place, Cancer, Leo and Ophiuchus have sunk to the western horizon. The constellation of Zhongtian has been replaced by Aries, Big Dipper, Serpent and Five Immortals.

After several months of continuous observation, you will find that every three months, the constellation of Zhongtian will move to the western horizon.

Generally speaking, you can see the starry sky in three seasons in one night. For example, at dusk in midsummer, we can see the constellation of spring hovering on the western horizon, while the constellation of summer is high in the sky. At dawn, the autumn sky is at the zenith.

Of the 88 constellations, we can only see some of them, and some constellations will never reach the horizon. To see these constellations, we have to go south of the equator to see them.