Posted on 06/19/2023 12:22:36 PM PDT by Red Badger
A groundbreaking study from the University of Copenhagen has presented a fresh perspective on Earth’s formation, suggesting it occurred in a few million years, far quicker than the previously believed 100 million years. The research indicates that Earth was formed through the fast accumulation of small pebbles, and water’s existence is a byproduct of this formation process. This theory provides a promising outlook for the potential of habitable planets beyond our Solar System, given that water is a critical ingredient for life.
Earth formed in a few million years, much quicker than previously thought, through the rapid absorption of pebbles, dust, and icy particles, according to a new study from the University of Copenhagen. This finding enhances the likelihood of other habitable planets in the Universe due to the byproduct of water from this formation process.
When we walk around in our everyday life, we might not think of the Earth itself very often. This planet is, however, the foundation of our existence, providing the air we breathe, the water we drink, and the gravity that holds us to the ground.
Until recently, researchers believed that it took over 100 million years for Earth to form, with water being delivered by fortuitous collisions with water-rich asteroids such as comets. A new study from the University of Copenhagen, however, suggests that Earth’s formation might not have been a matter of pure luck.
A New Theory of Earth’s Formation
Professor Martin Bizzarro of the Globe Institute and co-author of the study explains, “We show that the Earth formed by the very fast accumulation of small millimeter-sized pebbles. In this mechanism, the Earth was formed in just a few million years. It appears that the presence of water on Earth is a byproduct of its formation.”
The research results indicate that Earth was created much faster than previously thought, and the presence of water is an anticipated outcome of this formation process. This information has significant implications for our understanding of planets outside our Solar System.
Implications for Habitability in the Galaxy
“With this new planet formation mechanism, the chance of having habitable planets in the galaxy is much higher than we previously thought,” Bizzarro says. Habitability is the potential for a planet to have the right ingredients at its surface for life to develop, and water is a key ingredient. Associate Professor Martin Schiller, also a part of the study, elaborates, “People have debated how planets form for a long time. One theory is that planets are formed by the gradual collision of bodies, progressively increasing their size over 100 million years. In this scenario, the presence of water on Earth would need a sort of chance event.”
Silicon Isotope Constraints on Terrestrial Planet Accretion
Monte Carlo simulations of Fe–Ni isotope evolution of the terrestrial mantle during concurrent accretion and core formation in μ54Fe57/56–μ58Ni62/61 space. Ellipses represent 2 s.e. intervals for the measured BSE, IIIAB and CI isotope compositions. The grey lines represent the evolution of the proto-Earth mantle during pebble accretion. The colored lines represent various outcomes of the Moon-forming giant impact depending on the fraction of the Theia’s core that equilibrated with Earth’s mantle during impact. The equilibration degree is shown by the color scale and circles highlight 10% and 30% of equilibration with Theia’s core. Credit Nature, DOI: 10.1038/s41586-023-06135-z
Role of Dust Particles in Earth’s Formation
A paradigm shift in this belief, however, is introduced by the new study, which offers a fresh theory of Earth’s creation. “There was a disk around the young Sun where the planets were growing. The disk was filled with small dust particles. Once a planet reaches a certain size, it sort of acts like a vacuum cleaner, sucking up all that dust very quickly, which contributes to its growth to Earth size in just a few million years,” explains Ph.D. student Isaac Onyett, the corresponding author of the study.
This “vacuuming” of small dust particles played a pivotal role in Earth’s formation and ensured that water was delivered to our planet. The disk also contained icy particles, which were absorbed along with the dust, contributing to the presence of water during Earth’s formation. This shift in understanding raises the probability of water being present on other planets.
Predicting Water on Other Planets
“This theory would predict that whenever you form a planet like Earth, you will have water on it. If you go to another planetary system where there is a planet orbiting a star the size of the Sun, then the planet should have water if it is in the right distance,” asserts Bizzarro.
The researchers used silicon isotopes to understand the mechanisms and timescales of planet formation. By analyzing the isotopic composition of over 60 different meteorites and planetary bodies, the team established genetic relationships between rocky planets like Earth and Mars and other celestial objects. This approach offered insight into the types of building blocks that assembled to form Earth and the process by which they came together.
Reference: “Silicon isotope constraints on terrestrial planet accretion” by Isaac J. Onyett, Martin Schiller, Georgy V. Makhatadze, Zhengbin Deng, Anders Johansen and Martin Bizzarro, 14 June 2023, Nature. DOI: 10.1038/s41586-023-06135-z
You don’t say....................
Until recently, researchers believed ....................
galactically speaking, isn’t earth in the magic orbit... a fraction closer, no water, a fraction farther, ice...
planning is everything...
Some say 6 days. 😉
I say ‘one’. Just the dirt part.........................
One day a group of scientists got together and decided that humanity had come a long way and no longer needed God. So they picked one scientist to go and tell Him that they were done with Him. The scientist walked up to God and said, “God, we’ve decided that we no longer need you. We’re to the point where we can clone people, manipulate atoms, build molecules, fly through space, and do many other miraculous things. So why don’t you just go away and mind your own business from now on?”
God listened very patiently and kindly to the man. After the scientist was done talking, God said, “Very well. How about this? Before I go, let’s say we have a human-making contest.” To which the scientist replied, “Okay, we can handle that!”
“But,” God added, “we’re going to do this just like I did back in the old days with Adam.”
The scientist nodded, “Sure, no problem” and bent down and picked up a handful of dirt. God wagged a finger at him and said, “Uh, uh, uh. Put that down. You go find your own dirt.”
Carl Sagan is quoted as saying, “To really make an apple pie from scratch, you must begin by inventing the universe.”
Now the earth was formless and empty, darkness was over the surface of the deep, and the Spirit of God was hovering over the waters. (Genesis 1:2)
What about the moon forming due to the collision with a Mars size body?
pretty sure it was created in one day by an intelligent life outside our understanding,,,,
Yes, we are in the so-called ‘Goldilocks Zone’, not too hot, not too cold. Just right......................
That happened in ‘ONE DAY’ also..................
Me too!.................
I’m glad they have that and Gore-bull worming all worked out and have a consensus.
There was a study some decades ago on the formation of zircons - out of that came the theory that the Earth 500,000,000 years after it was formed was much like it is today with landmasses and blue skies.
Science has never been able to fully explain why there is so much water on Earth.................
Yep!.....................
“ensured that water was delivered to our planet”
_________________________
Planets need a lot more than water to sustain life.....so where did life come from?
where is the mother ship?
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