New Evidence That Earth And Its Moon Have An Explosive, Interconnected Past

February 10, 2021 0 By admin

The beautiful and charming moon of the Earth has long been a source of inspiration for romantic poetry, magical myths and wonderful stories. But beyond the beautiful myths and stories, the Moon – our planet’s closest neighbor in space – is a very real object, and it was the closest companion of our planet almost from the beginning, when our star, the Sun and the corresponding effects of planets, moons, comets, asteroids and various smaller objects first emerged from a cloud of gas and dust. But where did the Earth’s moon come from? Although most planetary scientists have long believed that our Moon was the result of a giant collision between our planet and the protoplanet Teia the size of Mars, attempts to confirm this have at times been problematic. But in April 2015, planetary scientists published a new report saying they may have discovered important clues that shed new light on the original mystery of the moon’s birth on Earth.

According to the giant impact hypothesis – the most popular model of the formation of the Moon – the Earth’s moon emerged from the abandoned debris when Teia crashed into the original Earth. Our solar system was born about 4.56 billion years ago, and it is widely believed that in the first 150 million years of its formation, Teya hit the Earth and merged with Earth, throwing a huge cloud of rocks and debris into space. This cloud eventually merged to form the Earth’s moon.

The giant impact model was first proposed in the 1970s, and for about three decades planetologists have generally been pleased with it – with one exception. Although this explanation of the formation of the Moon makes sense when scientists study both the physics of the moon’s orbit around our planet and its size, the explanation begins to crumble when the isotope compositions of two bodies – the geological analogue of DNA – “fingerprint” are compared. “.

The problem is that the Earth and its beautiful moon are too similar. The theory of the giant impact implies that the Moon is mainly composed of tragic Teya, not the Earth, and therefore planetary scientists have long believed that the Moon is the isotopic “fingerprint” of this doomed shock element. Since Teija is believed to have come from another part of our solar system, she probably had a very different isotopic footprint than our home planet. Since lunar and terrestrial rocks have similar composition, this indicates that the Earth and Teija should have looked the same. Consequently, the Earth and the tragedy of Teya would be almost identical to the sister planets – with closer relationships than other planetary bodies observed throughout our solar system. However, the probability that this is the case is only about 1%. According to Dr. Robin Kanup, a planetary researcher at the Southwestern Research Institute in Boulder, Colorado, it’s “unpleasantly rare.”

Mystery of the Missing Teia

Each of the eight main planets inhabiting our solar system has its own unique composition, which can be determined by studying its isotopes. Isotopes are variants of chemical elements, such as oxygen, in cosmic samples. For the giant collision hypothesis to work, assuming that one primitive object, such as Teia, fatally fell on an ancient Earth, and that the debris generated by the collision was the main source of the Earth’s moon formation – the Earth and its lunar satellite must also demonstrate different ratios of elementary isotopes.

Over the years, several theories have been developed explaining how the Moon was born. One theory suggests that our planet and its moon were born simultaneously from the original protoplanetary accretion disk, consisting of gas and dust, from which our entire solar system originated. The second theory states that our Moon was once part of the Earth and originated from the earth about 4.5 billion years ago. According to this scenario, the Pacific Basin is the most likely place where this lunar formation occurred. The third scenario suggests that the Moon is a migratory body born elsewhere in our solar system, and eventually entangled in Earth’s gravity as it passed by our ancient planet.

Explosive and interconnected past!

Planetary scientists have created a new isotopic “fingerprint” of the Moon, which can give a long-awaited answer to the agonizing question why the Earth and its moon are so similar in composition. By targeting the isotope of tungsten found both on Earth and on the moon, the team is the first to agree on the accepted hypothesis of a giant collision of lunar formation with isotopic “fingerprints” of two bodies that are very similar.

The results are published in the online issue of the journal Nature on April 8, 2015 titled: Isotopic evidence of tungsten for disproportionate late access to Earth and the Moon. The document states that Teya’s impact on the ancient Earth was so catastrophic and cruel that the resulting cloud of debris completely mixed up before settling down and developing towards the moon.

“The problem is that the Earth and the Moon are very similar in their isotopic footprints, which suggests that they were both formed at the end of the same material, which was collected at the beginning of the history of the solar system. C It’s amazing because it’s about Mars. Who created the Moon should have been very different. So the mystery is that the Earth and the Moon don’t have to be as similar as they are.” Richard Walker in April 2015 at the University of Maryland Computer College (UMD), Mathematical and Natural Sciences (CMNS) press release Dr. Walker is a professor of geology at UMD and co-author of the study.

To find this explanation, Dr. Walker and his team studied another well-documented phenomenon in the ancient history of our solar system. Evidence suggests that the Earth and the Moon collected additional material after the main impact – and that the Earth collected more of this debris and dust. This new batch of materials contained a large amount of tungsten, but a relatively small amount was derived from a light isotope called tungsten-182. If we combine these two observations, we can expect that our planet will have less tungsten-182 than on the Moon.

When Dr. Walker and his colleagues compared the moonstones and the Earth, they did find that the percentage of tungsten-182 on the moon was slightly higher. The main question is how much more?