Scientists have found that a cosmic body that stroked the Earth and conducted to the genesis of the Moon about 4.4 billion years ago, also brought huge amount of water to our planet and made it inhabitable.
As we all know, the Earth is the only planet which has great amount of water, and comparatively has a large moon than others, both which is necessary for development of life on the Earth. When Earth was strike by a body about the size of Mars, also called Theia, then the Moon came into being. Till today, scientists had presumed that Theia arose in the inner solar system near the Earth.
This research was published in the journal Nature Astronomy. It showed that Theia comes from the outer solar system and bring large amount of water to Earth.
Thorsten Kleine (Professor of Planetology at the University of Munster in Germany) said, “Our approach is unique because, for the first time, it allows us to associate the origin of water on Earth. To explain it simply, without the Moon there would probably be no life on Earth.”
From the previous studies, we come to know about, that the solar system became organized such that the ‘dry’ matter, which were broke-up from the ‘wet’ materials. The carbonaceous meteorites are relatively rich in water, which come from the outer solar system. Although, the drier non-carbonaceous meteorites come from the inner solar system. While, these earlier studies have shown that carbonaceous materials were distinctly responsible for bring the water to Earth. It was still unrevealed when and how this carbonaceous material came to Earth and brought the water.
Gerrit Budde, from University of Munster, said that they have used molybdenum isotopes to answer this question. The molybdenum isotopes helped us differentiate between carbonaceous and non-carbonaceous matter, and as such represent a ‘genetic fingerprint’ of material from the outer and inner solar system.
The computation show that the molybdenum isotopic Constitution of the Earth lies between those of the carbonaceous and non-carbonaceous meteorites. The chemical properties of molybdenum plays a crucial part because it is an iron-loving element and most of the Earth’s molybdenum is pinpointed in the core.
Second author of the study, Christoph Burkhardt, said that the molybdenum which is approachable in the Earth’s mantle, originates from the late stages of Earth’s formation, while the molybdenum formed before phases is entirely inside the core.
The outcomes bring into view that carbonaceous material from the outer solar system arrived on Earth late. Scientists also found that the most of the molybdenum in Earth’s mantle was given by the protoplanet Theia, whose collision with Earth 4.4 billion years ago and it formed the Moon. Nevertheless, since than a large portion of the molybdenum in Earth’s mantle arose from the outer solar system. In other words, this means that Theia itself also formed from the outer solar system.
According to the boffins, this collision had given enough of carbonaceous material and an amount of water on Earth.