There are many telescope observations of the Moon, but faint or detailed parts of it have to be studied by orbit. While there are many orbiters around the Moon, NASA’s Lunar Reconnaissance Orbiter (LRO) is the US full-fledged campaign to precisely map its craters, temperature variations, radiation environment, and much more over many years. In the special light of ultraviolet light, traditionally hard to measure parts of the Moon like ice in dark craters and floating atoms orbiting or being ejected from the surface can be seen and studied. Thanks to LRO’s continuous data collection, we have years’ worth of data to study these faint things. In particular, the loosely bound atoms, or the Moon’s exosphere, is an exciting thing to measure since it is the layer between the solar wind and the surface of the Moon. We’ll be looking at how we measure this layer with ultraviolet light and what it tells us about how the Moon interacts with its surrounding space environment.