Revelations about the Origin of Water on Earth!

A little over a year ago, a meteorite ended its mad run in northern England. Researchers today reveal it contained water eerily similar to what we know on Earth.

In February 2021, an asteroid crashed in northern England. The largest chunk of the small town side of Winchcombe. In the Wilcocks’ garden, who picked it up less than 12 hours after it hit the ground. protect him from many contaminationcontamination through earthly elements. It is the first time that a meteoritemeteorite is restored so quickly. And that allowed researchers at the Natural History Museum in London to do a more thorough analysis.

The mystery of the origin of water on earth finally solved?

They bombed about 530 gram samples ofelectronselectronsX-rays and rays laserlaser to determine its exact composition. They also studied the numerous available videos of the meteorite in the sky. Rather, to determine its trajectory and origin.

water and other elements of life

From their work, it appears that the Winchcombe meteorite is a fairly rare type. Because particularly fragile. A carbon-rich meteorite called chondritischondritis carbonaceous such as had never before been found in the country. It comes from one asteroidasteroid is located near theorbitorbit from JupiterJupiter, about 300 million kilometers from Earth. And it began its journey to us as boulder 30 kgkg, about 300,000 years ago. what he’AirAir You’re welcome, be brief.

The researchers also show that the meteorite contains amino acids and others materialsmaterials organic. The building blocks of life. And by weight about 11% of the water trapped therein mineralsminerals. But especially this part of thehydrogenhydrogen of which this water consists corresponds to heavy hydrogen, deuterium. In a relationship quite similar to that on Earth. A good indication that the water on our blue planet comes from water-rich asteroids.

The water of the oceans would come from asteroids, according to a new study

Water on Earth is the origin of all life, including ours, and that is why we wonder about its origin. The debate on this topic has not ended for decades, but what is certain is that it comes from outer space. The analyzes of the samples from RyuguRyugu again support the thesis that water from the oceans was brought to the primeval earth by asteroids billions of years ago.

Article by Laurent SackoLaurent Sacko published on 08/20/2022

missions ApolloApollo and the interplanetary probes launched in the 1970s allowed broad confirmation of a scenario worked out in previous decades that led to planet formation and cometscomets in one protoplanetary diskprotoplanetary disk high in gasgas and dust surrounding a boy SunSun about 4.56 billion years ago.

This scenario brings out and grows the rocky planetsrocky planets like the earth mercurymercury or March over accretionaccretion, with a bombardment of asteroids and comets, traces of which can still be found in the form of lunar craters. The water in Earth’s oceans must have originated from this bombardment, but debate over the precise nature of the small celestial bodies responsible for this contribution has continued for decades. In other words, does water come mostly from comets or asteroids?

Futura has devoted many articles to this debate and today a new article was brought to it above an article at natural astronomy. It reports certain results of the analyzes of samples of matter returned to Earth by the Japanese probe Hayabusa-2 in late 2020. These samples are from the asteroid Ryugu (“dragon palace” in Japanese), a member of the Apollo family of asteroids, of type C because of its composition similar to carbonaceous chondrites found on Earth, and located at more than 300 million kilometers away from our planet.

Examination of its samples, less than 900 meters in diameter, confirmed that it contained original material dating from the formation of the solar system, little altered despite traces of warming and water circulation. liquidliquid whose temperature must not have exceeded 30°C.

Hydrogen isotopes as cosmogonic tracers

The cosmochemists studying the samples from Ryugu say today that the analyzes of the isotopic abundances of hydrogen and nitrogen again point to the relationship between the water of the asteroids and that of the oceans on Earth.

To understand what it is, remember that there are of course two types of water, one of which is ordinaryatomsatoms of hydrogen H with a single protonproton for core; the other, called heavy, consists of deuterium D atoms, that is, a nucleus with a proton and a neutronneutron.

The origin of sea water explained by a new theory

A fraction of the water on earth is made up of moleculesmolecules Contain deuterium instead of a hydrogen atom. We can therefore define a D/H isotope ratio, which in cosmochemistry is an indicator of the origin of seawater.

Therefore, by comparing this ratio with that found in meteorites and comets, it is possible to determine the parents of the waters of the oceans. For years the thesis of an origin of this water by volcanic outgassing of the young earth has been abandoned and the pendulum has not stopped swinging alternately either to the side of comets or to the side of meteorites.

The study of meteorites on Earth, coming mainly from the main asteroid belt, has made it possible to establish that the average D/H ratio was of the order of 140 ppmppm while for certain comets this ratio ranged from 150 to 300 ppm. Since it’s about 150 ppm on Earth, the comet hypothesis has been disproved, or at least comets would be far from the main source of water on Earth.

Ryugu’s analyzes therefore support the asteroid hypothesis.

The solar system is a laboratory for studying the formation of giant planets and the origin of life that can be used in conjunction with the rest of the observable universe for the same purpose. MOJO: Modeling the origin of JOvian planets, ie the modeling of the origin of the Jupiter planets, is a research project that has resulted in a series of videos presenting the theory of the origin of the solar system and in particular the gas giants by two renowned specialists, Alessandro Morbidelli and Sean Raymond. For a fairly accurate French translation, click the white rectangle at the bottom right. Then the English subtitles should appear. Then click on the nut to the right of the rectangle, then on “Subtitles” and finally on “Translate automatically”. Choose French © Laurence Honnorat

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