All the changes that have taken place during the evolution of the Earth have been influenced by many factors. In this, many factors have been outside the Earth. In this, apart from the rays coming from the Sun, the gravity of the Moon, meteorites falling to the surface of the Earth have also played a role. It has given direction to the changes taking place on the Earth. New studies have discovered another interesting factor, it is nothing but the earth’s orbit in which the Earth revolves around the Sun.
Earth’s orbit does not remain stable
Many people think that the Earth’s orbit around the Sun, essentially circular, has always been the same and stable. But in reality, it is not so. Once every 4.05 lakh year, this orbit of our Earth is stretched and becomes 5 percent elliptical before returning to its old state.
Factors of global climate change
Scientists have known this cycle for a long time. It is called Orbital Eccentricity or ‘the cause of change in global climate. But how and to what extent it affected the Earth was still unknown. Now new evidence has shown that the changing orbit of the Earth affects our Earth’s biological evolution.
Orbit effect and the advent of new species
A team of scientists led by palaeontologist Luc Baffert at the French National Center for Scientific Research (CNRS) has discovered clues to the orbital eccentricity that suggested this eccentricity played a role in the origin of new species Earth. These species at least include species such as phytoplankton.
Coccolithophores are sunlight-absorbing microscopic algae that form layers of limestone around their soft cell bodies. These limestone shells are called coccoliths. These have been found in an abundance of coccolith fossils. They first started to be found 215 million years ago in the late Triassic period.
Study of sediments in the oceans
The abundance of coccoliths greatly influenced the nutritional cycles of the Earth, so its presence was bound to have a profound effect on our Earth’s system. With the help of artificial intelligence, Baffert and his colleagues measured 9 million coccoliths spread over 2.8 million years of evolution in the Indian and Pacific Oceans. Researchers got a lot of detailed information through precise dating techniques of samples of ocean sediments.
Parallelism in two cycles
The researchers found that the average length of the coccolith follows a regular cycle. Which corresponds to Earth’s orbital deceleration cycle of 4.05 million years. The most extended average size of Coccoli was only slightly behind the time of the highest concentration. It had nothing to do with whether there was a glaciation on Earth or the state between them.
The researchers of this study, published in Nature, found that when the Earth’s orbit is more elliptical. The weather around the equator becomes more intense. This leads to more conflict in these seasons. It also brings more diversity in the species of coccolithophores.