|View of the Moon just before Sunrise.|
The rapid rotation would also mean a different circadian rhythm as the 24-hour day becomes close to a 6-hour day. A rapidly rotating terrestrial planet is also highly unstable without an anchor such as our Moon. The significant wobbling would cause enormous stress on the surface of Earth. This would result in large magnitude earthquakes, high volcanic activity, catastrophic tsunamis, an unstable atmosphere, and drastic magnetic field changes. The evolution of both Earth and life on it are not just the result of the perfect distance from the Sun, but also the stabilization that the Moon has given our planet.
This week I've decided to just continue with an astronomy theme.