“Outside the Science Centre in my city there is a large metal structure which could turn and point at where the planets were in the sky. I never saw it working, but I always thought it would be magical to know where these unreachable other worlds actually were in relation to my tiny self.
When I walked past this long-dead exhibit recently I thought “I bet I could make that” and so I did!
This is a guide on how to make the Planet Finder (featuring the Moon) so you too can know where to look when you’re feeling awed by space.”