We went into our respective cancer treatments. Amaey did indeed become confined in isolation after his irradiation and transplant—but I heard from his teacher Leslie that from his room he was keeping himself busy exploring the Moon, counting craters with MoonZoo, and classifying galaxies with GalaxyZoo. Even though Amaey was physically confined to his room, his intellect and curiosity were free to roam the Solar System and the Universe, exploring limitless expanses, thanks to the citizen science tools that he put to such good use. Soon, I got distracted with my own treatment, and I wasn’t online as much as I would have liked to have been.