Want to go stargazing? Check out this dataset first! What you are looking at is a map of light pollution. Light pollution in urban centers creates a sky glow that can blot out the stars. The brighter the area in this map the harder it is to see stars and constellations in the night sky. Yellow indicates places where the winter Milky Way (fainter than its summer counterpart) cannot be observed and orange indicates artificial brightness that masks the summer Milky Way as well. It’s estimated that

A new atlas of light pollution shows that most people never see a truly dark sky at night. | Scientific American