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Life on Earth may have been possible due to an ancient, violent collision



Life on Earth

Was the violent cosmic clash that created the Moon made life on Earth possible?

There are a number of theories about how life originated on Earth, many of which try to explain how our planet has received the ingredients for life: elements such as carbon and nitrogen. It is supposed that the meteorites supply the living elements on Earth. While the isotopic signatures of these Earth elements coincide with these objects, the ratio of carbon to nitrogen is not quite right. While meteorites, believed to have delivered crucial elements for Earth's life (known as carbon chondrites), have 20 parts of carbon for each nitrogen portion, this ratio is about 40-1 on the Earth. in a stunning collision, says a group of oil scientists from Rice University. Scientists know that the long-standing collision between the proto-earth and the Mars-sized object has created the moon ̵

1; the same striking element may have given us the elements to induce life, they say. To arrive at this conclusion, a research team created a simulation of the event based on a series of experiments that tested the behavior of carbon, nitrogen, and sulfur during the process of forming the core of a rocky planet. The team then simulates high pressures and temperatures during core formation and estimates how much carbon or nitrogen can be on the Mars-sized planet with a sulfur-rich core. They completed with a geochemical simulation that accurately modeled the observations of carbon, nitrogen and sulfur on Earth.

The probable scenario

With their simulation, along with the known ratios and concentrations of Earth elements, the team found that instead of a rain of meteorites supplying important elements, it is more likely that the explanation came at once.

Our simulation results show the most likely scenario for the origin of carbon, nitrogen and sulfur on the silicate part of the Earth where these elements are brought from the Mars-sized planet (8-10 percent of the mass of today's Earth) that merges with the proto-earth, "says Reed Dasgupta, co-author of the article in an email. Besides, such a planet would probably have a core rich in sulfur. here. "There are many questions that have not answered the question of how life really came into being. Our study, however, provides a mechanism for bringing the raw materials needed for the recipe of life, "Dasgupta said.

This work was published in Science Advances.


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