The universe originated 654.38+03.8 billion years ago. Why can humans see things beyond 46 billion light years?

Before answering questions, we need to understand two basic concepts:

1, origin, the meaning of birth, is an age concept, that is, how big the universe is.

2. Light-year, the unit of distance, refers to the distance that light can travel at a constant speed for one year. The speed of light is 29.979 km/s, and one light-year equals 29.979 km *60 seconds *60 minutes *24 hours *365 days = 945 million km.

Secondly, there are five concepts:

1. Does light move at a constant speed? Yes, because the speed of light is not produced in the form of motion, but in the form of propagation, the magnitude of force only affects the amplitude of the wave and does not affect other parameters.

2. Will 2.BIGBANG expand at a constant speed in the future? No, the expansion of the universe is accelerating. This has been confirmed by scientists' observation, but why does it accelerate the expansion? Scientists analyze that dark matter is the cause, but this theory has not been confirmed or falsified, because no dark matter has been found yet.

3. Can an object accelerate faster than the speed of light? In principle, it will not exceed the speed of light, but if there is dark matter, it can exceed the speed of light.

4. Is the radius of the universe only 46 billion light years? No, this is just the universe that humans can observe. We don't know how big the universe that humans can't observe.

5. Are light and the universe born at the same time? No, it took 380,000 years after the birth of the universe to produce light.

Now that we connect these concepts in series, it is obvious that BIGBANG will accelerate its expansion in the future. After 654.38+03.8 billion years, the expansion speed has already far exceeded the speed of light. So the universe is expanding much faster than light, and it is accelerating, so we can observe the universe with a radius of 46 billion light years, but how big is the universe expanding? Is there a boundary? Nobody knows.

Because relativity does not prohibit the non-inertial frame of reference from running 46 billion light years in 65.438+0.38 billion years.

For example, if you are a spaceship, you see a destination that is 100 light years away, so you are ready to take off.

First of all, you have a clock on the spaceship.

Then you enter the energy equivalent to 10 multiplied by the speed of light multiplied by the mass of the spacecraft in classical Newtonian mechanics.

How many years has this clock been running without considering the acceleration and deceleration time?

The answer is: this clock has been running for 10 years.

The reason is also very simple. As your speed approaches the speed of light, your time will start to slow down and your watch will run slowly.

Although in terms of the starting point and the ending point, your speed can never exceed the speed of light, in other words, after you arrive at your destination, you will find that both the starting point and the ending point have gone through 100 years.

But for your watch, it has been 10 years, which does not violate the theory of relativity at all.

Knowing this, we can understand why people can see things beyond 46 billion light years. It can be understood that the speed of all objects slows down with the passage of time, so the expansion of distance exceeds the speed of light.

Of course, the speed of an object slows down with time, which is equivalent to the distance expanding with time.

In the words of scientists, space expands with time, and the expansion speed exceeds the speed of light.

These people are very clever, and they refuse to take responsibility. They haven't found a planet millions of kilometers away from the earth, but they have found a planet 46 billion light years away. What is this cover-up of 46 billion light years? It can only be told to children who are not sensible, for fear that they will not see the light in front of the public.

There are believers, and there are no unbelievers.

The universe has no origin. The universe originated 654.38+03.8 billion years ago, which is the wrong statement of BIGBANG's theory. So, everything else is wrong.

Year and light year are two fundamentally different concepts.

Can a 15-or 16-year-old middle school student see stars dozens of light-years away through an astronomical telescope?

Scientists talk casually, and no one can refute it. I am a scientist, and you can't argue that I can see things beyond 1 trillion light years. Zunyi Shengli agriculture products

65.438+038 billion years is time! 46 billion light years is the distance! They can't be understood as units of measurement! There will be no doubt about this understanding!

Author: Huang Wei

Modern scientists believe that the universe has a history of 65.438+03.8 billion years, but because a newly discovered star (white dwarf) named "PSRB 1620-26b" is about 65.438+02.7 billion years old, it is also the oldest known star, obviously older than the universe (the formation of a star usually takes hundreds of millions of years).

What we see now is that the universe is expanding and cooling, and everything is moving away from everything except gravity. The speed of expansion is called Hubble constant. At present, the universe is expanding at the rate of one million light-years per hour. Therefore, the obvious conclusion drawn from the expanding universe is that matter is being diluted and there is more space between galaxies.

A less obvious result of the expansion of the universe is the extension of the wavelength of light, which is called "red shift". At first, high-energy high-frequency waves were released shortly after BIGBANG, and finally, microwaves with lower energy could be detected, which is called "cosmic microwave background radiation", which is why James Webb Space Telescope is an infrared telescope. Because the photons emitted by galaxies are billions of light years away from us, their frequencies have changed.