After 35 seconds, at 300million degrees, chemical elements began to form.
It will take 12billion to 15billion years for light from the edge of the universe to reach the earth.
The rotation speed and period of each part vary with the distance from the silver center.
0.01 seconds after the big bang, the temperature of the universe was about 100billion degrees.
From the perspective of the evolution of the universe, they are more basic than stars.
The universe is filled with gas clouds.
Through the radiometric year, the age of the earth is 4.5 billion years, so the age of the sun is 4.51 billion years.
There is a larger sphere outside the silver disk, where there are few stars and small density.
About 14.1 billion years ago, the big bang occurred after the singularity, starting the birth history of our universe.
In such a vast universe, the earth is just like a drop in the ocean.
The Milky Way rotates poorly as a whole.
How did the linguistic universe come into being? 1.
The sun is about 23000 light-years away from the silver core and moves around the silver core at a speed of 250 km / s, with a cycle of about 250million years.
From a distance, the Milky Way looks like a discus for physical exercise.
What is the universe? How big is the universe? What is the age of the universe? The universe is the general name of all things and the unity of time and space.
Using this method, we can calculate that the age of our Milky way is about 14.5 billion years old, with an error of more than 2 billion years.
It contains 100 billion or 200 billion stars.
The scientific community believes that the “Big Bang” of the birth of the universe occurred about What is a galaxy? How many galaxies and stars are there in the universe? Most of the light spots on the sky are the stars of the Milky Way galaxy, but there are also a considerable number of luminaries that are huge star groups similar to the Milky Way galaxy.
Basic knowledge of Astronomy (I) the age of the sun and the earth? It is estimated that the age of the sun is 10million-2000 years older than that of the earth.
It is called “silver halo”, with a diameter of 70000 light-years.
After that, the material diffuses rapidly and the temperature drops rapidly.
The temperature keeps falling and atoms keep forming.
Most stars in the Milky Way galaxy are concentrated in a flat sphere of space, which is shaped like a discus.
In 1971, British astronomers Linden bell and Martin ness analyzed the infrared observations and other properties in the central region of the Milky Way galaxy, and pointed out that the energy in the center of the Milky Way galaxy should be a black hole.
The universal existence of galaxies indicates that they represent a level in the structure of the universe.
Under the action of gravity, they formed a stellar system, which has evolved over a long period of time to become today’s universe.
This is an unimaginable energy explosion.
The protruding part in the middle of the oblate sphere is called the “nuclear sphere”, with a radius of about 7000 light-years.
The famous Andromeda galaxy and the large and Small Magellanic Cloud are extragalactic galaxies visible to the naked eye.
The middle of the nuclear ball is called “silver core” and the surrounding is called “silver plate”.
The sun is located on a spiral arm called the Orion Arm, about 25000 light-years from the center of the Milky way.
As for the age of the Milky way, the prevailing view is that the Milky way was born soon after the big bang when the universe was born.
The center of the Milky way and the four spiral arms are places where stars are concentrated.
How many galaxies are there in the universe? How many stars are there in each galaxy? In this spherical space with a radius of 13billion light-years, about 125billion galaxies have been found and observed, and each galaxy has tens of billions to trillions of stars like the sun.
The Milky way is in a spiral shape, with four spiral arms extending evenly and symmetrically from the center of the Milky way.
Our sun is one of these countless stars.
According to the cosmological theory, the universe we observed focused on a singularity with extremely small volume, extremely high temperature and extremely high density at the early stage of its gestation.
According to the Big Bang Universe model, the universe is about 20billion years old.
According to the latest observational data, the farthest galaxy that people have observed is 13billion light-years away.
Scientists believe it originated from an incredible big bang 13.7 billion years ago.
14 seconds after the big bang, the temperature was about 3billion degrees.
The Milky way is a spiral galaxy with a spiral structure, that is, it has a silver center and two spiral arms, which are 4500 light-years apart.
Because the main part of the bright band projected on the celestial sphere is called the Milky way in China.
The diameter of the discus is 100000 light-years, equivalent to 9460800 billion kilometers.
Originally, people imagined that the universe would not expand due to gravity, but scientists have found that there is a kind of “dark energy” in the universe that will produce a repulsive force to accelerate the expansion of the universe.
Introduction to the Milky Way galaxy is the galaxy to which the earth and the sun belong.
How does the Milky way work? How many years does the sun go around the Milky way? What is the age of the Milky way? The Milky way is a giant spiral galaxy, Sb type, with a total of four spiral arms.
They were mistakenly regarded as nebulae in history.
There are 100billion to 200billion galaxies like the Milky way in the universe..
The thickest part in the middle is about 3000 ~ 12000 light years.
It is so tiny.
Therefore, as long as you do a simple mathematical problem, it is not difficult to understand how many stars there are in the universe we have observed.
One second after the big bang, it dropped to 10billion degrees.
We call them extragalactic galaxies.
Now it is known that there are more than 100billion galaxies.
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However, there is no conclusive evidence for a massive black hole at present.
In other words, if a beam of light is emitted from the galaxy at a speed of 300000 kilometers per second, it will take 13billion years to reach the earth.
The material emitted by the big bang drifted in space, and the huge galaxy composed of many stars was composed of these materials.
The main forms of matter are electrons, photons and neutrinos.
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