Twelve constellations _ Twelve constellations

What are the most beautiful constellations in the autumn sky?

Every autumn, the air is fresh and the weather is cool, so people can't help but stay outdoors for a while. But compared with other seasons, the starry sky in autumn is lonely, because there are not many bright stars in autumn night, so it is difficult to identify. Before the summer triangle falls to the horizon, you can look up at the starry sky. Just to the east of Cygnus Tianjin, you can see an oblique "M". This is Cassiopeia, one of the royal constellations we mentioned earlier. It is the incarnation of Ethiopian Queen Kazio Paya, which can be said to be a very beautiful constellation in autumn. Through the position of Cassiopeia, you can find the shining Polaris.

In the wild, the "M" sign in the sky can also guide you to find the way forward. Northwest and south of Cassiopeia are the incarnations of the husband and daughter of the Queen of Ethiopia-Cepheus and Andromeda, which are also very beautiful constellations. Below Andromeda is Perseus, the incarnation of Poerxiusi, the hero of the princess's husband, while Pegasus and Whale, which are related to the royal constellation, shine. Obviously, the most beautiful thing in the autumn sky is this bright royal constellation. Autumn is the season of royalty. The best observation time for the starry sky in autumn is around 10 in the early evening every year. Looking for a clear moonless night, looking east from the summer triangle, you can see a quadrilateral close to the square-the autumn quadrilateral. This quadrilateral consists of three bright stars in Pegasus (α, β, γ) and one bright star in Andromeda (α).

Although it is not very bright, it is very eye-catching. Aquarius, Aquarius, Pisces and Whale, Aquarius in the south, show themselves in the south of the quadrangle in autumn. However, because most of these constellations are located in the southern sky, observing these constellations has some hard requirements for the latitude of the region where the stargazer is located. If you look too close to the North Pole, you may not see them.

But in any case, the autumn night sky is also an indispensable part of the starry sky in the four seasons. Let's observe these beautiful constellations carefully.