The document discusses theories that Earth originally had two moons - a smaller moon about 1/4 the size of the current moon that orbited closer to Earth, and the present larger moon. The smaller moon orbited every 20 days while the larger moon took 28 days. When the two moons passed each other every few weeks, it caused strong tides, storms, and high winds on Earth. It is theorized that an asteroid struck the smaller moon, breaking off a large piece that hit Earth and caused the extinction of the dinosaurs. This impacted the larger moon as well, destroying settlements and life upon it. The remains of the smaller moon were ejected from orbit into the sun.