2. Libra is the smallest constellation in the sky, and the longitude length in the ecliptic is only 2 1 degree. It is not a spectacular constellation, but it is very easy to find it through Scorpio: the shining Scorpio is in the east and the spectacular Virgo is in the west.
3. The magnitude consists of four planets in the shape of a ladder, of which two are the most famous: Zubenelgenubi (zubenelgenubi magnitude) and Zubeneschemali (Zubeneschamali magnitude). "Zuben" is a binary star with yellow and bright gray overlapping, and the second one emits a faint green light.