What is Andromeda? What is Andromeda?

1, Andromeda is one of the 88 modern constellations in the whole day and one of the 48 constellations listed by Ptolemy, a Greek and Roman astronomer in the 2nd century. It is located north of the celestial equator, and the main star of Andromeda, M3 1 (Andromeda galaxy), is one of the largest members of this galaxy group. In Greek mythology, Andlau Meda symbolizes Andlau Meda, a goddess who is locked on a rock and ready to be swallowed by the sea monster Ceto. Andromeda is the easiest to watch in the autumn night in the northern hemisphere. At the same time, there are constellations symbolizing other gods in Perseus mythology.

2. Andromeda is located below Ursa major and near Pegasus. The fairy's head is Cedius, a corner of the Pegasus quadrangle. Andromeda, because of its northern declination, can only be seen in the area north of the 40-degree south latitude line, and the area south of 40-degree south latitude will be below the horizon. Andromeda is one of the largest constellations in the celestial sphere, with an area of 722 square degrees, which is 1400 times of the full moon, 55% of the largest Ophiuchus and more than ten times of the smallest Southern Cross.