Basically, it's cutting out light pollution. If you don't need a light on outside, turn it off. If you do need one, there are better bulbs and directions of those bulbs to use to cut down the ambient light. Now why should this matter? Besides being able to see the stars better, it's also to benefit all living creatures. We all have circadian rhythms with daylight and darkness. Too much light for us affects our sleep. Too much light for deer affects their antler growth. Too much light for bugs attracts them and their predators to the lit areas. There's more, but you get the idea.
So now, I'm the online person for the group. I'm responsible for the website, Facebook and Instagram accounts. It's easy for me and let's me help in a way I'm comfortable with. Remember everyone, stars up and lights down!