About Earth, Moon, and Mars
They have predicted that the Earth might have been hit by a meteor which was 2,000 miles in diameter, and which could have altered the obliquity by 10 percent of more. It is believed that the impactors which hit the Moon were much smaller than the ones which hit Earth, as they might have had a diameter of 200 miles. They say that the water located in the mantle of the Moon might have been delivered by these impactors.
The main task of this project is to find out the way in which the difference celestial bodies and planets were created, and the way in which they evolved. The task might be very difficult, as they do not have too much evidence which would be able to sustain their theory. However they said that there still are certain clues about the way in which our planet was formed and in which it evolved. They said that the most important thing for them is to know where to look, as they are sure that the evidence is out there somewhere. They discovered that the Moon was formed as a result of the collision between a very large body and the Earth. That happened more than 4.5 billion years ago, and the scientists obtained this information by analyzing the lunar samples and comparing them with various data.
They believe that many other planets might have been formed from such collisions, and they believe that these collisions took place more often than it was initially believed. For a very long time, it was believed that the Earth and the Moon might have not been the result of a collision of very large proportions, as they believed that such events could not have these effects. It seems that thanks to the newly acquired information, they have reached to the conclusion that these events were possible, and that they might have even gave shape to the core of the Earth and of the Moon. They believe that the magma rivers might have been formed thanks to these collisions, but further evidence is needed in order to sustain this theory.
The researchers need to analyze the rocks from the core of the earth which have been brought to the surface by the volcanic activities. They stated that the rocks from the core of the Earth should have certain elements missing, but they found these elements, and it seems that they were in abundance. It is unknown why the elements are still found in the core, as they should have been removed by the effects of the impact caused by the meteors. It is believed that the initial impact might have removed those elements, but that the core was hit on numerous occasions, and that the other celestial bodies might have contained these elements as well. The researchers have reached to the conclusion that the comets or asteroids which have hit the Earth, were very huge, and that they were at least 2,000 miles in diameter. This means that they had the size of Pluto, and that the ones which hit the Moon were much smaller than that. They said that because of the size of these cosmic bodies, it is very likely that they affected our planet in certain manners.
For example, it is believed that the bodies which hit the Earth might have made the planetesimals, which are the blocks from which the core of the Earth is made of, “get used” to the impact of the asteroids, and thus they became more resistant to them. They have also reached to the conclusion that the asteroids are the older type of planetsimals, and that the majority of these asteroids have a very large size. It seems that these asteroids which are located in the inner asteroid belt, are constantly bombarding Mars, and that this is the main reason why the Red Planet has so many craters on its surface.
The researchers have used this information in order to make certain predictions about the possible future of our planet, the Moon, and Mars. It seems that the spin axis of our planet was modified by 10 degrees when the planet was hit by these bodies. It seems that Mars was hit by meteors which were 900-1,100 miles in diameter, and as a result they formed the Borealis basin. IN the case of the moon, the projectiles were able to produce the South-Pole-Aitkin basin.11