The conversation between human and AI assistant.
What would happen if moon were to start come closer to Earth, and eventually collide with it? What would be the consequenses and for that matter, what would happen to Earth?
What about tidal waves and earthquakes?
The collision would definitely cause significant tidal waves, possibly hundreds of meters high, that could reach quite far inland, similarly more frequent earthquakes for the next few months. The aftermath might result in a change of Earth's orbit too.