Scientists believe that the Earth may have lost up to 60% of its atmosphere in a collision that led to formation the moon More than four billion years ago, the research, led by Durham University, is based on 300 computer simulations looking at the consequences of impacts on rocky planets with thin atmospheres.
According to the British “Metro” website, the team said the results, which were published in a magazine The Astrophysical Journal LettersIt can be used by astronomers trying to learn more about the moon, which is believed to have formed after colliding with a mars-sized rock with Earth.
Lead author Dr. Jacob Cegres of the Institute for Computational Cosmology at the University of Durham said: “The puzzle about how the moon formed and other consequences of a giant collision with early Earth is something that scientists are working hard to uncover, as we have experimented with hundreds of different scenarios for many different colliding planets. While showing changing influences on a planet’s atmosphere depending on a number of factors such as angle and velocity of impact or the sizes of the planets, and while these computer simulations do not directly tell us about how the moon was formed, the effects on the Earth’s atmosphere can be used to narrow the different ways that may be It may form and lead us to understand the origin of the closest celestial planet. “
As part of the study, the researchers looked at ways in which the planet’s atmosphere could be altered by objects of different size and mass that affect different angles and velocities, and the simulations revealed that the Earth had lost between 10-60% of its atmosphere in the collision as the moon came into existence. .
The researchers say that the results also provide a new way to predict atmospheric loss from other rocky planets that participated in the collision, said co-author Dr Luis Teodoro, from the School of Physics and Astronomy at the University of Glasgow: “This major group of planetary simulations also sheds light on the role of impacts. In the evolution of the Earth-like exoplanets. “
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