to start the simulation, and the "full-screen" button 
to go full-screen. For further info, see the accompanying website. The following interactive simulation of the Apollo 11 "figure-eight" free-return trajectory around the moon was made to commemorate the 50th anniversary of the mission that landed human beings on the moon. All distances (except the size of the rocket!) are drawn accurately to scale. Push "Load Moonshot App" to load the app, push the "fast play" button to start the simulation, and the "full-screen" button to go full-screen. For further info, see the accompanying website.
---Bruce Bartlett, Stellenbosch, 16 July 2019
