W constellation _w constellation

What does Cassiopeia mean? The answer is as follows:

The Polaris Cassiopeia stands for Queen Cassiopeia of Ethiopia.

Knowledge expansion:

Cassiopeia: A W-shaped constellation in the northern hemisphere between Andromeda and Cepheus. Cassiopeia In autumn and winter, the northern hemisphere can see the most beautiful constellation and five beautiful stars in the northern sky.

Polaris can be seen all year round in the northern hemisphere, but the best observation season is autumn (65438+1October-165438+1October). It represents Cassiopeia, the queen of Ethiopia. Cassiopeia is one of the 88 modern constellations of the International Astronomical Union and one of the 48 constellations listed by Ptolemy, an ancient Greek astronomer.

Cassiopeia is an easily recognizable constellation, and its five brightest stars form a very unique W-shape or M-shape (related to the viewing season). Because it is not far from Polaris, this constellation will not set all night at high latitudes, and it is one of the arch polar constellations opposite to the Big Dipper.

Cassiopeia is a constellation comparable to the Big Dipper. There are at least one hundred stars that can be seen clearly with the naked eye, but only six or seven are particularly bright. Among them, three second-class stars and two third-class stars form an obvious English capital letter "W", which is the most important symbol to identify Cassiopeia.

The "W" of Cassiopeia is far away from the Big Dipper, so when Cassiopeia rises to the zenith in autumn, the Big Dipper is at the lowest place in the sky, even in the south of China. Without Beidou, we can connect the midpoint of δ star with ε and γ star and extend northward to find Polaris.

Cassiopeia A is the first independent astronomical radio wave source discovered. It was discovered by astronomers martin ryle and Francis Graham Smith of Cambridge University in 1948 using a LongMichelsonInterferometer (English: LongMichelson interferometer). Its optical counterpart was first confirmed in 1950.