Planet Earth is 12,756 km (7,926 mi) in diameter, and is confirmed to be the densest planet in the solar system. With a rapid rotation of ~1,000 mph, the planet has a slightly oblate shape. (KSP fan!)

1. Keeping humanity and all the other life on the surface alive
2. Playing the piano!
3. Making sure to never step into the infinite IKEA and get lost
4. Preventing the Wario apparition from appearing