Green laser pointers are amazingly useful tools for teaching the general public about the night sky, it's easy to point out specific targets and have everyone know what you mean. Sometimes people will point out satellites and even the ISS, so I wanted to figure out whether an astronaut on the ISS would be able to see lasers from people on the ground. Here's the original video of the ISS Flash project: https://www.youtube.com/watch?v=2UoY15WDuHQ