A deep investigation of the spherical planets in Super Mario Galaxy

My daughters and I loved playing Super Mario Galaxy for the Wii in 2007. And we bought two copies of the Switch version when it came out a couple of weeks ago so we can play it again. So, we were excited to learn that Michael "Jasper" Ashworth released one of his deep-dive investigations into the physics of the game's spherical planets. If you like Nintendo games and want to learn about how they are made, Ashworth's videos are a must-watch.