Have you ever noticed that when you look out of your window at night, the city skyline is full of twinkling lights? Those twinkling lights are known as night lights. Night lights can make a city look much more inviting, and can make people feel safer when theyre walking through the streets after dark. They are used to indicate which buildings are inhabited, and also highlight popular tourist attractions. Night lights are also sometimes used to control light pollution. Street lights are designed to only light up the streets that they are installed on, and not areas beyond them. This eliminates unnecessary light pollution that can make it difficult to stargaze. Furthermore, night lights can also be decorative. Some cities install colored lights around popular areas to make them look more attractive. This is especially true for cities with lots of tourist attractions, such as Las Vegas or Tokyo. Night lights arent just about beauty though; they also serve a practical purpose. By lighting up dark areas, they make it easier for people to find their way around at night or navigate dangerous areas. Night lights can also be used to alert people to hazards in a specific area, such as downed power lines or hazardous materials. In conclusion, night lights can make a city look inviting and help control light pollution. They are also an important safety measure, as they can help people find their way around and alert them to potential hazards.