The formation of the universe is better short!! Under 500 words

Before the formation of the universe was the gravitational singularity, a "point" with infinite density, infinite curvature of space-time, infinitely high heat, and infinitely small volume, at which all known laws of physics fail. Until the singularity expands beyond the limit, all states have no effect on the existing world, and it is impossible to deduce from the current state to the state before the singularity. What causes the singularity to expand beyond its limit is the "vacuum energy".

13.7 billion years ago, the singularity was inflated, the universe appeared, the time of the inflation was only 10 -34 seconds, and the space was thousands of meters, so the inflation was faster than the speed of light. After that, the entire universe was big ** (there was no explosion in the big **), the universe officially began to expand, and celestial bodies were created.

The formation of the universe stems from the big ** theory, and no one has yet stood up to take responsibility for who ignited it.

In the field of extraterrestrial studies, I think there is no concept of distance and time limit, and it is generally accepted that aliens only travel through the galaxy through vortex passages. The latest science shows that some aliens live in black holes, verifying that the most dangerous area is precisely the paradise that aliens consider the most suitable for human habitation. Where is the center of the universe?

The largest quasar and super black hole should be the center of the universe, which can explain the state of the universe in the first place, because it is very far away from our earth, the center of the universe we see now is the center of the universe hundreds of millions of years ago, we live in the edge of the universe There are many lattice bands of light, each of which leads to another universe, the world is connected by many universes, and there are light bands connected in the middle, and this cosmic grid supports the universes to achieve balance.

Writing ideas: This is an imaginary essay, when writing, mainly write about what you will associate with when you see the starry sky, pay attention to the development of things, and have perceived.

I love looking up at the stars in the stillness of the night.

I am full of curiosity and yearning for the vast starry sky. It is so vast and far-reaching, so sacred and majestic, so beautiful and miraculous ......

When I was a child, I loved listening to my mother tell stories from the sky. My mother said that there were palaces made of jade on the moon, small jade rabbits, and beautiful Chang'e, who lived a carefree life on the moon.

I thought it would be nice if I could live on the moon! At night, I found the big round moon hanging in the night sky, and I jumped up with all my might, but it was too far away from me. Dad smiled when he saw me like this, and said:

Silly boy, how can you go to the moon without wings? "At that time, how I longed to grow a pair of dexterous wings and fly to the moon.

When I entered elementary school, my interest in the starry sky continued unabated, and I learned more about the starry sky and became more curious. At night, I looked up at the deep space of the dark night, countless stars were twinkling, different in darkness and distinct layers, as if a huge cube was shrouded in the sky above me, empty but real.

Questions are tumbling in my mind: How big is the universe? How are planets formed?

Will the moon be sudden**? In the universe, the planets that move regularly, the stars that shine, the cold and indestructible black holes, and the interstellar dust that spreads everywhere, these various new terms continue to inspire my inner yearning for the universe.

How big is the universe? "The four directions are said to be the universe, and the past is called the present. "The ancient Chinese accurately defined the universe as we see it today.

In 1919, 10 years after Eddington verified the general theory of relativity through a total solar eclipse, Hubble used the luminosity of type IA supernovae to determine the distance of more than 20 extragalactic galaxies, and measured the redshift value of each galaxy through spectral analysis. According to Hubble's Law, it is easy for scientists to think that the universe as a whole seems to be expanding. Now that the universe is expanding, what if we went back in time?

The result is obvious, all the galaxies in the universe will retract into a small region, so the theory of the universe based on the expansion of the universe is naturally proposed. Now, scientists have measured the rate of expansion of the universe in different ways, that is, the Hubble constant, and because of the differences in the results measured by different methods, we generally use the value measured by Planck satellites through cosmic microwave background radiation, which is about one million parsecs, and one second is about one light year), according to which the age of the universe can be calculated to be about 100 million years. Knowing the age of the universe, can we know how big the universe is?

Because the special theory of relativity limits the limit of speed in the universe to the speed of light, since the universe was only born for 100 million years, that is, the matter produced by the universe can only travel 100 million light-years at most, isn't the radius of the universe 100 million light-years? This reasoning is reasonable, but unfortunately it is wrong. In fact, the special theory of relativity restricts that the speed of matter in space-time cannot exceed the speed of light, but as mentioned earlier, according to Hubble's law, the most reasonable explanation for the distance of distant extragalactic galaxies is that the universe is expanding, and the galaxies that are far away due to the expansion of the universe are not the movement of the galaxy in space-time, but the expansion of space-time itself, which is not constrained by the speed limit of light of the special theory of relativity.

Having said all that, how big is the universe? The answer is: I don't know.

We don't really know how big the universe is, but we do know how big the observable universe is. Because the age of the universe is limited, the distance that light can travel in this limited time is the radius of the observable universe, but due to the expansion of the universe mentioned above, this radius is not 100 million light-years, but a little larger, as light travels in the expanding universe, when it reaches our eyes after 100 million years, in this process, the distance it has traveled has been expanded, according to scientists' calculations, this distance has been stretched by about 46.5 billion light-years. That is to say, with the expansion of the universe, the farthest distance we can observe at present is 46.5 billion light years, and the radius of these 46.5 billion light years constitutes a sphere with a diameter of 93 billion light years.

The diameter of the universe is 93 billion light years, and the so-called universe refers to the general term of various celestial bodies and diffuse matter, and our current astronomical research shows that the universe still exists in a stage of constant motion and development. It is assumed that distant regions of space exist and are part of reality, but can never interact with them. The regions of space that can be influenced and affected are the observable universe.

The observable universe depends on the observer's position. A traveling observer can touch a larger area of space-time than a stationary observer. However, even the fastest traveler can't interact with all the spaces.

In general, the observable universe refers to the part of the universe that is observed from the Earth's current location in the Milky Way. The true distance between the Earth and the edge of the observable universe measured at the current time is 46.5 billion light-years (14 billion parsecs), which means that the diameter of the observable universe is about 93 billion light-years (28 billion parsecs). The distance from the edge of the observable universe to Earth is very close to the age of the universe multiplied by the speed of light, which is 13.8 billion light-years (4.2 billion parsecs), but this does not represent the distance between Earth and the edge of the observable universe at any given time.

Cosmological composition: The universe is almost entirely composed of dark energy, dark matter, and ordinary matter. Others include electromagnetic radiation (estimated to account for or close to the total energy of the universe) and antimatter.

Over the course of the history of the universe, the proportions of all types of matter and energy have changed. Over the past 2 billion years, the total amount of electromagnetic radiation produced in the universe has decreased. Ordinary matter, including atoms, planets, stars, galaxies, and life, only accounts for the total amount of mass and energy in the universe.

The overall density of such substances is currently very low, approximately equivalent to the density of only one proton in every 4 cubic meters of volume. The nature of dark energy and dark matter is unknown. Dark matter is a mysterious form of matter that has yet to be identified, accounting for the total amount of the universe.

Dark energy is energy from the void space, which causes the expansion of the universe to accelerate, accounting for a total of the universe.

The universe is vast and infinite, and with the current level of science of mankind, we do not know that the edge of the universe is in the **. You can think about it, if the universe has an edge, and now we haven't found this edge, and the wild gopi universe has reached such a large level.

Today's people think that the universe was once larger about 15 billion years ago.

Before the beginning of **, the universe was at a "point" where there was no space and there was a huge amount of energy. Time stops. Matter exists in the form of energy.

Then,,, at some point (15 billion years ago) the energy starts to transform into matter e=mc 2 , time kicks in, space starts to appear, objects appear.

The universe is big, the theory of cosmic expansion, in fact, it is just a change in the speed of time. That is, today's 1 second is not the same as yesterday's 1 second, today's is tick.

Yesterday's one: tick ---. At the beginning of the formation of the universe, 1 second was:

The dripping --- didn't click, but it was always ticking,,. Nope. During this period, there was no space because space and time were enclosed.

Finally, there was a moment. The Universe is in motion ... Space is coming, matter is coming,,, but only a few things are coming out, there are many things that are not coming out, they are called dark matter.

Well, where did Dad go?

Scientists tried to break their heads and didn't find dark matter. Recently I got a collider, trying to find the lost dimension. Looking forward to ,。。

I want to introduce a new theory about the universe.

The universe is divided into rational universes and irrational universes.

Rational Universe: What is currently observed, is recognized.

Irrational Universe: The Dark Matter Universe.

The relationship between the two: Something out of nothing.

Where are you? Will you be fine together? Will you be fine together?

Will you be fine together? Will you be fine together? Are you my life state that we will also gain?

Will you be fine together?

You go to Stephen Hawking's A Brief History of Time.

From the artificial satellites of the former Soviet Union, to Gagarin's ...... circumnavigating the earth in a spaceshipOur exploration of the universe is constantly escalating. Looking back, such development has sometimes been bumpy.

As we all know, space is a vacuum; For the hungry spaceship, maybe no one can do anything. On January 28, 1986, the second U.S. space shuttle "Challenger" was on its 10th flight, and more than 70 seconds after it rose from the launch frame, the space shuttle worth $1.2 billion turned into pieces and crashed into the Atlantic Ocean, killing all seven crew members, causing the biggest tragedy in the world's aerospace history. This is the first major catastrophe in the air in the 25 manned space flights conducted by the United States.

The "Challenger" shocked the whole United States, and flags were flown at half-mast in Washington and other places in mourning. The President of the People's Republic of China sent a telegram to Reagan the next day, expressing condolences over the tragic death of seven astronauts on board the US Space Shuttle.

We live on Earth, and it's as if there is no Earth in the universe. Because the universe is so big! In the vast universe, there is the Milky Way, and now we know the knowledge of the Milky Way, but the secrets of the universe are still a mystery to us!

There are more than a dozen planets in the Milky Way, including the Earth we live in, the fiery sun, the beautiful Saturn surrounded by halos, the cold Pluto, Mars, Mercury, Uranus, and so on.

The Moon is the smallest planet, only a few million kilometers away from our Earth, but our world has long been on the Moon. At that time, the American Amustrang piloted the "Apollo" spacecraft to the moon, and there was no air on the moon, so the astronauts had to carry heavy oxygen tanks on their backs. It doesn't take much effort to lift a big rock on the moon, because the gravitational pull on the moon is smaller than that of the earth, and the weight on the moon is only one-sixth of that on the earth.

Lunar eclipses, I'm sure you've seen them, that's because the sun's rays don't hit the moon, and the earth happens to block the sun's rays, so that there will be a lunar eclipse.

The Sun is the largest planet in the Milky Way! Its surface temperature is 6,000 degrees Celsius, and the core temperature is about 3,000 times the surface temperature! It's almost 1,500,000 degrees Celsius, which is a miracle in the universe!

Even if anything touches it, it will turn into gas, ah! What an amazing temperature. Let's [analogize]:

If you walk to the sun, it will take more than 3,500 years, even if you take a jet [jet], it will take more than 20 years! We look at the sun on the earth, but it is very small, because the sun is too far away from the earth, so it is so big!

There are many planets bigger than the sun! The Sun is a star. These two stars are big enough! Betelgeuse 2 is more than 200 times the size of the Sun! And Betelgeuse 4 is more than 500 times the size of the sun, which is a staggering number!

The universe is infinite! The universe is a treasure trove of knowledge! He is waiting for us to dig up the "treasures" when we grow up, and I want to be an astronomer when I grow up to explore this mysterious universe!