Write down the three constellations you observed in the northern and southern sky in autumn.

Cygnus, one of the northern constellations, is located in the Milky Way. The brightest star in Cygnus is a white star "Tianjin IV" with a magnitude of 1. Cygnus is like a swan flying on the Milky Way, stretching its neck and spreading its wings. The main bright stars in Cygnus are arranged in a cross, which is called the "Northern Cross". Cygnus has 22 brighter stars than 4. Cygnus 6 1 is the closest star to us.

Lyra, one of the northern constellations, is located on the north side of the Milky Way. Vega is a white 0-magnitude star and the main constellation in summer.

One of the zodiac constellations, located in the southeast of the Milky Way. The Altair in the constellation is a white star with a magnitude of 1. Altair is arranged in a straight line with two small stars evenly distributed on both sides, commonly known as "Altair Samsung" or "Polaris". There are 13 brighter stars than 4 in Aquila. It is arranged in triangles and diamonds, with some small stars beside it.