Is the Earth dying? Why is the earth dying?

Rest assured, there are still many more centuries to go.

The Earth is speculated to have survived for 4.6 billion years, but how long will it live?

Scientists believe that if the Earth is allowed to move freely, it may exist forever, but if other external factors interfere with it, the Earth may have an end of life.

The external factor is the sun in the first place, because it is the closest planet to the earth and can have a destiny on the right earth That is to say, all the energy and power on the earth come from the sun, and once the sun has three long and two short, it is bound to affect the earth. Before the 30s of this century, people always thought that the sun would one day burn out, turn from white to orange and then to red, and finally become a dark star that was silent, but its brilliant life. In the 30s, when physicists learned the mystery of the sun's light, the situation was very different.

It turns out that the Sun's energy comes from its thermonuclear reactions, and the Sun's lifetime will pass through the gravitational contraction phase, the main-sequence star phase, the red giant phase, and the compact star phase. The main sequence phase is the period of stability of the Sun. This phase will last for 10 billion years.

At present, the sun is only halfway through and is in middle age. Once the Sun reaches the red giant stage, then the end of the Earth is coming. Of course, this is billions of years away.

Are there any other factors besides the sun's interference with the earth? Some scientists believe that the Sun may have a brother, a companion star of the Sun, which orbits the Sun day and night, and every 26 million years, turns to the closest place to the Sun"Make waves"Its strong gravitational pull will cause a large disturbance of many comets, and 1 billion comets will be on a rampage in the solar system, and the Earth and other planets will become these comets"Target"。If the mass of the comet that collides with the Earth is large enough, the consequences are unimaginable:

the extinction of light organisms and the drastic changes in ecology; Heavy landslides and earth cracks, the earth"Powder.

When everything in the universe is born, there will be an end, and the same is true of the earth. The birth of the sun gave the earth all the energy, and if the sun died, the earth would also be destroyed.

Astronomers speculate that the Sun is about 5 billion years old, and in the next 5 billion years, it will begin to age, and the core will gradually condense and expand the outer volume into a red giant, and the Earth and other planets will be burned to ashes by the powerful energy emitted by the sun. However, even if the sun destroys the earth, it will be 5 billion years away.

What is truly terrifying is the catastrophe inflicted on the planet by humanity itself. Due to the massive emissions of carbon dioxide, the greenhouse effect will lead to the death of plants, the extinction of herbivores, and the inundation of much of the land by melting sea water in the north and south poles.

Frequent wars and various nuclear weapons could also destroy the planet.

The end of the earth is a product of Western tradition, religion.

But as humanity develops, more and more problems will increase the probability of doomsday, and there may be.

Most recently, on May 21, 2011, it was declared bankrupt.