Cities and towns have a lot of street lights and lights inside and on the outside of buildings. These have been put out throughout the course of time so that we can see and navigate the streets even at night. Although this is essential for having our cities and towns be congenial places to move around, the big problem they cause is light pollution. As the mass of light in a town or city increases, the brighter the skyglow is, making the night sky brighter and obscuring the stars from us. This can be frustrating for those who want to stargaze.