It is the theory researchers Martin Jutzi and Erik Asphaug of the University of California at Santa Cruz now promotes in the renowned research journal Nature.
Thurs celestial bodies colliding, is an image that has special relevance in these days as a result of Lars von Trier's cinematic current film "Melancholia." In this film shows a planet from its hiding place behind the sun and then finally slam into the earth to the tune of Wagner's "Tristan and Isolde."
Has Martin Jutzi and Erik Asphaug right in their assumptions, have something similar once happened in the Earth's immediate surroundings, albeit without the music.
According to the researchers, there was once both a lunar and a larger moon, the one with three times as large in diameter and 25 times as much weight as the other. In dozens of one million years circled together around the Earth, but eventually peeled together as a result of gravitational forces.
All this should have happened according to the researchers for several billion years ago.
Martin Jutzi and Erik Asphaug insists that the collision theory can explain the lunar landscape that exists today.