Scientists from the University of Southampton in the United Kingdom have discovered that it is possible that changes in the Earth's rotation axis encouraged the development and prosperity of complex life despite the most extreme climate that has ever existed on Earth.
[Translation by Dr. Moshe Nachmani]
The researchers examined a sequence of rocks that lay on the surface of the ground in an era when most of the Earth's surface was covered in ice, an era known as "Snowball Earth" (from Wikipedia: The Earth as a snowball or the frozen Earth is a scientific hypothesis according to which for several periods in history of the Earth, at least once 650 million years ago in the Neoproterozoic era, the Earth was covered completely - or almost completely - by an ice sheet) and which lasted more than fifty million years. MThe research findings were published in the scientific journal Nature Communications.. "One of the biggest challenges to this hypothesis is the fact that life does seem to have survived this extreme period," said the lead researcher, a professor of earth sciences at the University of Southampton. "In other words, either this era did not occur at all, or life somehow survived even in this extreme climate."
The researchers arrived in a vast desert in South Australia where they examined glacial rocks that were kilometers thick that were formed about seven hundred million years ago. During this time Australia was located closer to the equator, the same area known today for its tropical climate. However, the rocks they examined presented incontrovertible evidence that continental ice sheets extended even as far as the equator at that time, a fact that provides significant evidence that the Earth was entirely covered by a sheet of ice. The researchers focused on sedimentary rocks composed of alternating layers of iron-rich material and silica-rich material. The rocks were embedded in the ice-covered ocean near the massive ice sheets. During this historical period, the glacial ocean was completely cut off from the atmosphere, and so, without the normal exchange between sea and air, many climatic changes that would normally occur simply did not occur. "The very different layers of rock seemed to indicate cycles that resembled climate cycles related to the advance and retreat of the ice sheets."
Iron from springs on the bottom of the sea
"The origin of the ferrous material is from hydrothermal vents on the seabed," explains the lead researcher. Normally, the oxygen in the atmosphere oxidizes the iron immediately, so that such iron formations do not accumulate. However, during this period, when the ocean is cut off from the air, the iron actually managed to accumulate in its original form and not as iron oxide." With the help of magnetic susceptibility measurements, i.e. - the degree of sensitivity of rocks to exposure to a magnetic field - the team was able to discover that the layered structure of the rock preserved within it evidence of almost all the Earth's rotation cycles. The orbit of the earth around the sun changes the shape and the angle of inclination of our star, and therefore the angle of inclination of the axis of rotation of the earth also undergoes cyclical changes. These astronomical cycles change the amount of solar radiation reaching the earth's surface and thus they also control the climate.
Multicellular life arose during a climate crisis
"Although the Earth's climate system behaved very differently during this period, the cyclical changes in the Earth's rotation continued as usual," explains the lead researcher. The researchers came to the conclusion that these changes in the angles of the Earth's axis of rotation allowed the ice surfaces to weaken and increase, a phenomenon that led to ice-free areas during this period. The researchers' findings help explain the surprising presence of sedimentary rocks in this era that suggest the existence of water flowing over the Earth's surface, water that would otherwise be trapped within the ice sheets. The lead researcher explains: "Our observations are important, since we now conclude from them that complex multicellular life was born during this period of climate crisis on Earth, an explanation that we did not have before receiving our findings. Our research points to the existence of separated ice-free complexes within the vast glacial ocean that existed during this period, complexes that provided shelters for the development of complex life and their survival even in these extreme climate conditions on Earth," explains the researcher.
More of the topic in Hayadan:
12 תגובות
Three facts that crush the imaginary ball of the idolaters
1. A sea level cannot exist in a spherical earth because if there is a sea level (according to NASA) there must be a boundary for water, a fundamental law of nature. If there is a boundary for water and 72% of the earth is water, then how is it a sphere? We will be happy for an explanation from the liars and idolaters.
2. An airplane or any other flying craft will never be able to take off or land on a ground that moves under it at 427 m/s heh tell us about it
3 A tank gunner, for example, will never be able to hit a target of, for example, 2 km (an armored bullet) if an arrow shell, for example, has a muzzle velocity of 1800 m/s, which means it takes a second and a bit to reach the target, but in a second and a bit the target has already moved 500 meters. Tell us about it!
4. The North Star Throughout history in the ancient world, seafarers, desert walkers and travelers needed an anchor to navigate and this is the North Star. You can see the north star from anywhere only in a flat earth in the billiard ball of the idolaters you went south from the equator and the head is upside down and the ship is upside down and the camel is upside down lol you lost the north star and got lost in the oceans or deserts.
The problem with all these idolatrous liars is that they think the public is stupid, but it's not!!!
And there are also religious Yanto who worship a lie in the name of the Torah. Get off the site of this heresy, a bunch of stupid, stupid, complete fools
Checkmate!
Science is the best interpreter of religion.
Those who think that science contradicts religion do not understand
in religion and does not understand science
The tilt of the Earth's axis is written in the Torah
This is not a novelty
A climate crisis does not result from the use of oil..it had already happened several times before the discovery of oil by the Polish pharmacist.
. Science, which in my opinion is the fourth or fifth religion in the series of leading religions, Judaism, Christianity, Islam and Buddhism, saves humanity from extinction, after all, science comes and tries to disprove all the teachings of every religion and religion, and it's a good thing that if science did not exist, every religion would become the punching bag of
The rest of the religions until the end of humanity
So let science be the punching bag because it is not a people, not a country, and has no ruler, it is just a hypothetical science. So keep hitting it with words and not with cannons.
The writer is a very religious person.
"Enough already with the "beauty of intelligence": how many times is a hypothesis written?... Likewise, physiological and biochemical proofs are written.
The scientists who grope in the dark and fail to decipher the secrets of life and the secrets of the universe, must find a new and even stupid hypothesis every time, to justify their existence, and to hide the main reason which is the Creator. He is the cause and effect of everything that happens in the universe, and modern scientists will never understand his ways.
Why do many people come back and demonstrate their ignorance, and still feel the need to "awaken" those who are not stuck in ancient myths?
You are missing the word "maybe" in the title. Again, a site dedicated to making science accessible should meet slightly higher standards than Ynet.
The body of the article reads, appropriately, "It *may* be changes in the Earth's rotation axis that encouraged the development and proliferation of complex life..."
(By the way, there may *be* changes...)
Yes if a guided hand looks like collisions with large asteroids for example.
Guiding Hand?
How great is your deed, God. In any way of science it is impossible not to take you into account.
Without a bee, there are no plants. Without plants, there is no bee. So what came before what?
And now in the fierce frost life was created. Wake up friends without a guiding hand there is no life.