Light Years was the second app that I did to look at the subject of Scale. In this case, the app looked at distances to stars visible in the night sky by applying the context of what was happening here on Earth when the light we see today left the star. If you didn’t know this already, when you look up in the sky you’re seeing the Universe as it was in the past, simply because it takes so long for light from stars to reach us. Even when you look at the Sun, you’re seeing it as it was 8 minutes ago when the light that reaches your eyes left the Sun.
The idea was to help people get some concept of the vast distances to the stars we take for granted. The app had 20 constellations and for every star, you could get information on how far away it is (in light years). I then took virtually the whole of human history and split it into about 50 periods, so depending on what star you chose, you’d get historical information that reflected what was happening here on Earth when the light you’re seeing left its source star.
Like its sister app, Sun Scale, this one was retired many years ago, however I did take all of the core data and create a LifeStory based on it.