The Moon could have been created by the Earth colliding with another planet

According to scientists at the University of New Mexico, the Moon could break away from the Earth because of an impact with another celestial body.

Scientists believe the bowels of the Moon hide the evidence of its origin. In particular, the remains of another planet that the Earth collided with about 4.5 billion years ago may be discovered there. According to rough estimates, the destroyed planet of the solar system was the size of Mars. When it collided with the Earth, it merged entirely with it, but as a result of the disaster, created a new celestial body, which became the Moon. Also, the collision could have triggered a whole chain of events on Earth, including the birth of life.

This hypothesis has indirect evidence: the Apollo mission has shown that lunar soil samples are very similar to the Earth's. They are very different from other objects found in the solar system. Additionally, the isotopic composition of oxygen in the samples changed depending on the rock. With the depth of the isotopes becoming heavier. This may mean that the bowels of the Moon still hide the remains of an ancient planet.

The key problem of confirming (or disproving) this theory is the shortage of lunar soil samples. If the problem could be solved, we may possibly discover a lot about the history of our planet.