During stargazing, it is very important to find the North Star, as it is located above the North Pole of the Earth and is almost always visible, a reliable sign to determine the direction of the north. Here are some ways to find the North Star:
1. Look for the Big Dipper: First, find the Big Dipper in the sky. The Big Dipper consists of seven bright stars shaped like a spoon. The two end stars of this spoon (i.e., the two stars at the tip of the spoon, the two stars of Celestial Pivot and Celestial Xuan) point to the North Star.
2. Extend the connection between the two stars at the front of the spoon: Extend the connection between the two stars at the front of the spoon by about five times the distance to find the North Star. The North Star is located at the end of this extension.
3. Look for Cassiopeia: If you can't find the Big Dipper, you can look for Cassiopeia. The constellation Cassiopeia consists of five stars shaped like an inclined "m" or "w". Intersect the two extension lines of "m" or "w" at one point, and from that point extend towards the bright star in the middle of Cassiopeia, about five times the distance is the North Star.
4. Use smartphone apps: There are plenty of smartphone apps out there that can help you find the North Star. These apps often have star maps and compass features that can help you locate the North Star quickly.
Once you've found Polaris, you can use it to determine the positions of other constellations and celestial bodies. At the same time, the North Star is also an important reference point for night navigation, which can help you orient yourself during outdoor activities.