Encyclopedia of constellation knowledge _ Encyclopedia of constellation knowledge

Aries: fire sign, March 21~ April 19.

Taurus: Earth sign, April 20th to May 20th.

Gemini: air signs, May 2 1 ~ June 21.

Cancer: water sign, June 22 ~ July 22.

Leo: Fire sign, July 23rd to August 22nd.

Virgo: Earth sign, August 23rd to September 22nd.

Libra: air signs, September 23rd ~ 65438+1October 23rd.

Scorpio: water sign, 65438+1October 24th ~165438+1October 22nd.

Sagittarius: Fire sign,165438+1October 23rd ~ 65438+February 2nd1.

Capricorn: Earth sign, 65438+February 22 ~ 65438+ 10/9.

Aquarius: air signs, 65438+1October 20th to February 18.

Pisces: water sign, February19 ~ March 20.

Extended data

The origin of the constellation:

Mesopotamian astrologers divided the starry sky into several regions for the convenience of studying and observing many stars in the sky, and each region was a constellation. It's hard to say clearly when humans began to have the concept of constellation. This astronomical knowledge was known long before there was a historical record. The name of the constellation probably comes from the sailors who sailed early.

The origin of constellations may be completely different between civilizations in different regions, but with the expansion and mutual influence of civilizations, the culture of constellations also includes the process of integration.

In 270 BC, the Greek poet Aratus wrote Things, in which 47 constellations were mentioned. From the star regions recorded in Celestial Bodies, we can know that due to precession, the South Pole in the period described in the book is not consistent with the current South Pole, so it can be inferred that the starry sky recorded in the book is before 2000 BC.

At the same time, the blank area of the starry sky record indicates that the observer should be near 35 to 36 north latitude. So some people think that the practice of dividing the starry sky into constellations originated from Babylon and Sumer in Mesopotamia, and the constellations of Greece and Egypt may have been introduced from this area.

Baidu encyclopedia-twelve constellations