The ingredients that created the conditions for life on Earth may not be native to our native planet. According to a new hypothesis, the essential elements of life have been transferred to a planet of Mars that collided with the Earth 4,5 billion years ago.
This hypothetical planet is called Theia, and it is also believed that some are responsible for breaking a piece of Earth and sending it into space to become our Moon.
But also, say researchers from Rice. The university has brought with it the volatile elements such as carbon, nitrogen, hydrogen and sulfur, which enable the Earth to live.
Based on what we know, it is unlikely that Earth produced the volatile substances that gave the atmosphere, the hydrosphere, and the Biosphere itself.
For a long time it is believed that Earth's volatile substances can be transferred to meteorites called carbon chondrites. These primitive meteorites, which bombed our planet, are much richer than volatile from the early Earths (also known as Gaia) and other rocky internal solar bodies, which is a pretty good supportive case for this hypothesis.
But according to the researchers, the proportion of these volatile substances in the chondrite is excluded, especially for one pair of elements. The carbon-nitrogen ratio of bulk silicate land is more than 20 times the ratio observed with carbon chondrite
. So the research team went on a mission to find out whether the volatile substances could be delivered by another method ̵
In a series of practical experiments using capsules filled with silicate and alloy blends, the team created high-pressure, high-pressure conditions in which the Tea kernel could have formed. This has helped determine what percentage of the sulfur kernel might have excluded carbon and nitrogen, leaving them in the bulk silicate of the planet.
Armed with this information, the team then conducts computer simulations of about a billion different scenarios to determine how the Earth has received. its volatile substances.
"We have found that all the evidence – the isotope signatures, the carbon-nitrogen ratio and the total amounts of carbon, nitrogen and sulfur in the bulk silicate land – is consistent with the impact of the moon shape, including a planet with large sulfur- "This does not mean that carbon chondrites have not contributed in any way but shows that Theia may have contributed to the majority – a finding that suggests that a planet may have a greater chance of development of life, if it suffers a strong saturation "From the exploration of primitive meteorites, scientists have long known that Earth and other rocky planets in the inner solar system are depleted with volatility," explains geologist Rydep Dasgupta.
"But the timing and mechanism of unstable supply is hotly debated, our first scenario that can explain time and delivery in a way that is consistent with all geochemical evidence."
The team's research was published in the journal Science Advances .