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Home / Science / Space News: Life on Earth "could come from a different plan" – new study | Science | news

Space News: Life on Earth "could come from a different plan" – new study | Science | news



A massive cosmic clash 4.4 billion years ago created the Moon, but it gave Earth the most vital ingredients for life, researchers at Rice University in Texas found. After a series of high temperature, high pressure experiments designed to mimic the conditions deep below the surface, the team of petrologists concluded a collision with a planet whose size resembles that of Mars, probably for the carbon and nitrogen on our planet. The study found that the Earth's core has no indication of carbon, nitrogen and sulfur, leading scientists to believe that the elements from an interstellar body are coming to Earth.

Damanveer Grewal, the lead author, said: "What we found is all evidence – isotopic signatures, the carbon-to-nitrogen ratio, and the total amount of carbon, nitrogen, and sulfur in the bulk silicate soil are consistent with a moon-forming one Influence, which includes a volatile planet of Mars size and sulphurous core. "

The sulfur content of the nucleus of the donor planet is important because there is puzzling evidence for carbon, nitrogen and sulfur in all other parts of the earth except the nucleus.

Mr. Grewal said: The nucleus does not interact with the rest of the earth, but everything about it, the mantle, the crust, the hydrosphere and the atmosphere are all interconnected.

"Material cycles between them".

Co-author Rajdee p Dasgupta said, "From the study of primitive meteorites, scientists have long known that the Earth and other rocky planets in the inner solar system are volatilely exhausted. However, the timing and mechanism of volatile delivery has been hotly debated.

"Our first scenario can explain the timing and delivery in a manner consistent with all geochemical evidence."

The study was published in Scientific Advances.

Scientists had previously hypothesized that the Earth is made up of material from two planets ̵

1; the early Earth and a second, smaller planet called Theia.

Initially, it was assumed that the moon was formed when Theia demolished and dissolved the Earth.

But a 2016 University of California study found that a small planet collided with Earth shortly after its inception 4.5 billion years ago.

The fierce collision as Theia plunged into the earth's early material, flying into space, which would later form the Moon.

The researchers analyzed the content of the lunar rocks brought by the Apollo missions 12, 15 and 17 and compared them with the volcanic rocks from the ear th.

They found that the oxygen isotopes trapped in the material were the same in both samples – meaning that the material from both bodies came from the same source.

Edward Young, principal author of the study, said, "We give. There is no difference between the oxygen isotopes of the Earth and the Moon. They are indistinguishable.

"Theia was thoroughly mixed into the earth and the moon and evenly distributed between them.

"This explains why we see no other signature of Theia in the Moon than the Earth. "


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