Light pollution is a problem that, in addition to being unpleasant to the star-gazer's eyes, has a potentially greater impact on the environment that we do not yet totally understand. A group of scientists are trying to get a better idea as to how it affects us in real terms by asking viewers to submit their light pollution views via their website.
Image courtesy Cinzano Falchi & Elvidge
GLOBE at night is an organisation asking for help collecting this data. They are asking viewers to go outside and find the constellation Leo or Crux, and report back their sightings via a web app. It works fine on a desktop but also works well on an iOS or other web-enabled device.
Tonight is a great chance to get outside and help a great cause while learning a bit about the night sky!