How many hundred million years ago was the sun formed?

As we all know, the sun is shining all the time, because the sun has been carrying out nuclear fusion reactions inside the sun, the sun has been born for 5 billion years, but the sun's energy will also run out one day, according to scientists' speculation, the sun's nuclear fusion reaction can continue to maintain 7 billion years, that is, the sun still has 7 billion years of life, so after 7 billion years, does it mean that the sun will leave the earth? So without the sun on the earth, can everything on the earth survive?

The reason why the sun can carry out nuclear fusion reactions is because there is a large amount of hydrogen in the interior of the sun, but the nuclear fusion reaction has also brought great harm to the sun, maybe after 1.5 billion years, the shape of the sun is not so stable, it is possible that the volume will continue to expand, at that time the volume of the sun will be much larger than the sun we see now, and the power of sunlight will be much stronger than now, and now in summer, the temperature is already high at 40. However, if the volume of the sun in 1.5 billion years is several times that of today, then the earth may be scorched, and it will not take long for the oceans and oceans on the earth to disappear, and the atmosphere above the earth will slowly thin out, and the earth will really have no protective layer, and it may become the next Mars!

If you look at it this way, maybe Mars really had life in the past, but because of some external factors, it disappeared, and because it was too long, with the current science and technology of human beings to find the reason, according to the conventional view, the earth is likely not to wait for the day when the sun disappears, maybe only 1.5 billion to 2 billion years, the earth is no longer the well-known earth, and it is no longer a beautiful home for human beings, and human beings can not continue to live on the earth!

But don't worry, 1.5 billion years is a very long time, the level of human science and technology has developed to such a high level in just 200 years, let alone 1.5 billion years, maybe then human beings have already found a second home, has been able to fly freely in space, the earth may not be the only one for human beings!

The sun was born 5 billion years ago in the solar system.

12 billion years old. That is, the solar system evolved for 7 billion years before it evolved into the current sun.

Basic physical parameters of the sun. Radius:

Kilometer. Quality:

Kilogram. Temperature:

surface) 15.6 million

Core 4102).

Total radiated power:

Joule seconds. Average 1653 density:

grams cubic centimeters.

Average distance between the sun and the earth:

150 million.

Kilometer. Age:

About 5 billion years.

The sun was formed around the time of the present day.

Year. Astronomers ** the sun will be extinguished in 5 billion years.

If the Sun had been pure hydrogen in the beginning, it would have taken about 20 billion years to form the current amount of helium. However, astrophysicists have shown that the Sun contains a significant amount of helium at the beginning, which has led to an estimated age of about 5 billion years.

The Sun is 5 billion years old and was formed by the reaggregation of material from supernova explosions. That's why there are rocky planets like Earth around the sun. Scientists estimate that the sun will exist for another 5 billion years, but because the sun will get hotter and hotter, it will not be that long enough to survive on Earth, and it is estimated that it will not be more than 1 billion years.

But this is a long time away, and we don't have to worry about it now.

4.6 billion years old is prepared to be cleared to about 5 billion years old.

Scientists believe that the age of the Earth is about 4.6 billion years old, and the Sun should have formed earlier than the Earth, so the age of the Sun should be around 4.6 billion to 5 billion years old. The sun is the central body of the solar system and occupies the overall mass of the solar system. The eight planets in the solar system, the small planets, meteors, comets, outer Neptune objects, and interstellar dust all revolve around the Sun, which revolves around the center of the Milky Way.

The Sun is a yellow dwarf (spectrum G2V), the lifespan of a yellow dwarf is roughly 10 billion years, and the Sun is currently about 100 million years old. In about 50 to 6 billion years, the Sun's interior will be almost completely depleted of hydrogen and the Sun's core will collapse, causing the temperature to rise, a process that will continue until the Sun begins to fuse helium into carbon. Although helium-like prefusion produces less energy than hydrogen fusion, it is also hotter, so the outer layers of the sun will expand and release a portion of the outer atmosphere into space.

At the end of the process of turning to new elements, the mass of the Sun will decrease slightly, and the outer layers will extend to the current orbit of the Earth or Mars (at which point the two planets will be farther away from the Sun due to the decrease in the mass of the Sun).

The Sun was formed about 100 million years ago in a cloud of collapsed hydrogen molecules. When the universe **, hydrogen condensed into huge clouds, which became the origin of much information, and part of the hydrogen was released in the Milky Way.

Floating. Over time, the free-floating hydrogen begins to concentrate and become more important to the Sun and the Solar System.

The formation of the foreshadowing. The sun and the solar system gradually became molecular clouds, and due to the influence of its own gravity, it began to collapse inward, and the excessive high-speed rotation eventually caused itself to become a huge disk, forming a ball of gas, and in the process of further compression, the atoms underwent nuclear fusion inside, so that the sun broke out of its shell.

The Sun is just a very ordinary star in the universe, but it is the central object of the solar system. In the solar system, there are eight planets, including our Earth.

A number of dwarf planets, comets, and countless other small bodies of the solar system orbit the Sun under the strong gravitational pull of the Sun. The territory of the solar system is huge, with Pluto alone.

For example, its orbit is nearly 40 astronomical units away from the sun, that is, 6 billion kilometers, and the actual range of the solar system is dozens of times that of this.