The Moon, the huge rock that revolves around our planet, began to slowly move away from Earth about 4 billion years ago. Until now, there weren’t many details about this event, but a new study has now presented new data about the event.
At the time of the event, according to the model of dynamic simulation, our Sun shine about 30% less and the Earth was a cold and inhospitable planet, and this new model intends to fill some gaps on the motives and how our planet and the Moon became neighbors during this period, and explaining why the Moon is much thicker than it should be in the middle.
Our Moon departs from Earth about 4 centimeters a year, which is one of the reasons why our planet’s rotation has gradually slowed down and our days have become longer, albeit at an extremely slow pace.
The distance and the annual degree of it is already common knowledge, but this new study now reveals data on how this movement would have happened billions of years ago, and reveals that the separation was a rather slow process lasting a few hundred millions of years, and for that to have happened, at the time, the planet would have to have been frozen, otherwise this slow movement would never been possible due to the forces of the tides.
The fact that our planet at the time have probably been frozen despite being substantially closer to the Sun, suggests that the latter would have had a much lower intensity thus allowing the Earth to freeze.
Theories that in the past the Earth would have been an icy planet as a consequence of the Sun being much less hotter than we know it, are not entirely new, but nothing has ever been suggested about the period of 4 billion years ago.
The biggest answer that this study intends to bring about is the motive of the Moon being flatter in the polar region and wider in the central region, contrary to the proportions it should have based on its rotation and velocity. Scientists believe that this format comes from the time when the moon was much warmer, larger, and much closer to Earth, with much of the material being trapped frozen in the central area of the Moon as it departed.
This new study has succeeded in creating a model that can corroborate the theory, demonstrating that the icy earth in conjunction with a slow departure from the Moon may actually be responsible for the strange shape of the Moon that we can observe today.