This gives you the difference in y coordinates between the points. Here is a rough sketch: struct Sample: Hashable { let timestamp: Date let offset: CGFloat } struct ContentView: View { @State private var track = [Sample]() let timer = Timer.publish(every: 1 / 30, on: .current, ...
Any water-ice on the surface would have evaporated into space a long time ago. Even if an occasional water-ice comet smacked into Luna, the Sun's rays would make it go away. But wait a minute. What if there were places on Luna that were permanently in shadow? Since there is no ...