Nothing on Earth is eternal. Most people realize that sooner or later, humanity, lượt thích the rest of the living organisms on our planet, may disappear. At the same time, various theories exist regarding the possible reasons for the extinction of all life.
During preparing this material, the following sources were used: Astronomy, Đài truyền hình BBC, NASA, Nature, Live Science.
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According đồ sộ some scientists, an asteroid could be capable of destroying all life on planet Earth.
According đồ sộ NASA data, our planet is struck by a large asteroid approximately every 100 million years, while collisions with smaller asteroids happen constantly.
Simulations conducted by researchers suggest that only a truly gigantic asteroid could wipe out life on Earth.
Moreover, the impact site of such a celestial body toàn thân, the angle of collision, and the type of rock it hits on our planet's surface all matter.
Asteroids come in different varieties (Photo: Pixabay)
Some scientists are concerned about so-called rogue stars that may approach at a dangerous distance and, theoretically, have a negative impact on Earth.
A group of researchers led by Eric Mamajek from the University of Rochester in Thủ đô New York identified, back in năm ngoái, that about 70,000 years ago, a red dwarf star called Scholz passed through the outskirts of the Solar System, through a region known as the Oort Cloud.
Experts note that this incident with the rogue star was not the first and certainly won't be the last. If another star comes too close đồ sộ the Solar System and our planet, it could pose a threat đồ sộ life on Earth.
Wandering stars (illustrative photo: Pixabay)
Another danger đồ sộ our planet is gamma rays, which refer đồ sộ electromagnetic radiation of the highest energy.
These rays can be emitted during powerful cosmic events, such as the explosion of a giant star or the collision of two stars, lasting from a fraction of a second đồ sộ several minutes.
Since gamma-ray bursts most frequently occur near the center of a galaxy or in regions with a high mật độ trùng lặp từ khóa of stars, Earth is relatively safe. However, scientists have identified instances of accidental gamma-ray exposure (traces found in fossils).
In theory, prolonged exposure đồ sộ gamma rays could destroy Earth's ozone layer, leaving all living organisms unprotected against deadly solar ultraviolet radiation.
Gamma rays can destroy the ozone layer (Illustrative Photo: Pixabay)
Another theory regarding the destruction of life on Earth is associated with volcanic activity of apocalyptic proportions.
According đồ sộ Henrik Svensen from the University of Oslo in Norway, the scale of species destruction will directly depend on the location where lava breaks through the Earth's crust.
Rocks heated by volcanic activity can eject a vast amount of chemicals into the atmosphere, which will destroy the ozone layer.
As a result, the Earth will receive a powerful dose of solar radiation, and all life on it will vanish.
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Supervolcano can completely change the Earth (illustrative photo: Pixabay)
Some researchers believe that the Earth's magnetic field deflects ionizing radiation from the Sun, which would otherwise destroy the atmosphere.
Since the magnetic field depends on the electromagneto-mechanical processes in the outer core of the Earth, any changes in the core could potentially affect the magnetic field.
Despite concerns from some scientists about the cooling of the Earth's core or the weakening of the magnetic field, most of their colleagues argue that nothing catastrophic is happening.
According đồ sộ Richard Harrison from the University of Cambridge in the United Kingdom, for the complete disappearance of the Earth's magnetic field, the core must solidify completely. However, currently, only its inner part is solid, while the outer part remains liquid.
Magnetic Field of the Earth - an integral component (illustrative photo: Pixabay)
The Earth's atmosphere hasn't always been as it is now. The world we know formed, in part, due đồ sộ oxygen produced by blue-green algae.
Some modern research points đồ sộ a negative trend – climate change significantly reduces the oxygen levels in the global ocean. This could have adverse effects on marine species and humanity as a whole.
Deforestation and the destruction of other green areas that provide us with oxygen and maintain the atmospheric balance may lead đồ sộ the extinction of all life on the planet.
This alarming process, known as deoxygenation, is a cause for concern among scientists.
Oxygen is the basis of life (photo: Pixabay)
The most apparent reason for the demise of our planet, according đồ sộ many scientists, is the transformation of the Sun.
According đồ sộ planetary scientist Ravi Kopparapu from NASA's Goddard Space Flight Center, over time, the Sun will evolve into a large red giant through natural processes, eventually engulfing the Earth.
Initially, against a backdrop of constant heat and high humidity, humanity will perish. In such conditions, our bodies won't be able đồ sộ cool down through sweating, leading đồ sộ their demise (essentially boiling under extreme heat).
Later, when the Sun's brightness is nearly 20% more than thở it is now, the world's oceans will begin đồ sộ evaporate.
Every star dies sooner or later (illustrative photo: Pixabay)
The last and most probable theory, according đồ sộ many scientists, is "self-destruction" due đồ sộ the negative impact of human activity on the planet.
Peter Ward from the University of Washington in Seattle is convinced that the greatest threat đồ sộ life on Earth comes from "within."
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He calls his idea the "Medea hypothesis" - named after the Greek queen who killed her own children.
According đồ sộ the scientist, no single cataclysm can completely destroy life. However, if the internal balance of the biosystem is disrupted, and another blow is dealt from space, life may disappear forever.
We previously discussed how many people would live on Earth in 2100 and whether the planet is ready for such changes.