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Supercomputer reveals Moon formed in hours, not days

2022-10-18 20:29:31Lifestyle SHKRUAR NGA REDAKSIA VOX
Supercomputer reveals Moon formed in hours, not days
Supercomputer reveals Moon formed in hours, not days

Most scientists agree with the hypothesis that the Moon was formed by the collision with the Earth of an object approximately the same as the planet Mars, called Teia, right at the beginning of the life of our planet. In reality, there are still some unknowns regarding the details of this event.

The chemical composition of lunar rocks studied so far is not entirely consistent with this hypothesis. Regarding this issue, there has recently been a new study by scientists from the Institute for Computational Cosmology at Durham University in Great Britain and from the NASA Research Center in Silicon Valley, California.

Supercomputer reveals Moon formed in hours, not days

The researchers used simulations made with a supercomputer located in the university's laboratories, thanks to which they created a more detailed panorama of what happened once. In particular, the scientists simulated hundreds of possible "variants" of the event, changing in each case the angle of impact, the speed of the collision, as well as the masses and rotations of the two bodies that collided.

So they tried to explore a large number of possible scenarios that led to the Earth-Teia collision. The study group concluded that most of the low-resolution simulations that had been performed by planetary scientists until now had missed important aspects of the collision.

Therefore, only with a supercomputer was it possible to highlight elements that had not appeared in previous studies. And in fact, only high-resolution simulations really led to the formation of a satellite very similar to the Moon.

According to the new study, published in the Astrophysical Journal Letters, most of the Moon formed immediately after the impact, even within hours, rather than on time scales of centuries or tens of centuries. This could mean that it melted less during formation than standard theories suggest, according to which the Moon grew slowly inside a debris disk orbiting Earth.

A Moon that formed quickly would explain, for example (contrary to previous hypotheses) how it was able to keep most of the water detached from Earth. It would also justify the fact that in many areas of the satellite, the composition is so similar to that of the Earth.

Therefore, this scenario opens new avenues in the interpretation of the available data and future lunar missions may further confirm new data on the type of impact that led to the formation of the Moon, and show new details about the history of the Earth itself.

 


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