With the advancement of human science and technology, humans now understand more and more about the universe. Now we know that the universe was born 13.8 billion years ago. 13.8 billion years ago, a singularity exploded. The singularity is an infinite mass. , a point with infinit

With the advancement of human science and technology, humans now know more and more about the universe. Now we know that the universe was born 13.8 billion years ago. 13.8 billion years ago, a singularity exploded. The singularity is a A point with infinite mass, infinite energy, infinite heat, infinite density, and infinitely small volume. After this point exploded, the universe rapidly expanded in all directions. It took 13.8 billion years for the universe to expand into what we see now. It seems that there are many celestial bodies in the universe, such as stars, planets, neutron stars, white dwarfs, etc. Our earth is a planet, and the sun is a star. The sun has been continuously releasing heat since its birth.

The reason why the earth can have life is because it continuously receives the energy of sunlight. According to the research of scientists, the speed of light is the fastest flight speed in the universe. The speed of light is about 300,000 kilometers per second. The speed of light can reach 300,000 kilometers per second. Around the earth 7 and a half times, many friends may ask after seeing this, how did humans calculate such a fast speed? In fact, humans began to calculate the speed of light as early as 1676. At that time, a scientist named Ole Romer calculated the speed of light for the first time. He used the alternating time of the orbital shadow of Io to calculate The orbital period of Io is about 42 hours, 25 minutes and 16 seconds. Under normal circumstances, the motion trajectory of celestial bodies does not change, so he believes that Io should move every 42 hours, 25 minutes and 16 seconds. Occluded by Jupiter .

After many people's observations, this scientist calculated that when the earth is the farthest from Jupiter, the time Io appears is 22 minutes longer than when the earth is closest to Jupiter. He believes that these 22 minutes are the time when photons are emitted from the earth. Using this method, he calculated the time it took to reach Jupiter to be about 210,000 kilometers per second. Although this value is still very different from the current value of the speed of light, it was possible to calculate the speed of light in that era. This is a very remarkable thing. Subsequently, many scientists have calculated the speed of light. In 1728, scientist James used the aberration of light to calculate that the speed of light was approximately 298,000 kilometers per second.

This value is basically the same as the current speed of light, but in Einstein 's theory of relativity, time is an orthogonal dimension of space. Simply put, the speed at which your time axis runs and the speed at which the space axis runs are equal to the star. The speed of light. According to Einstein's theory of relativity, we can know that time and speed are inversely proportional. When an object flies at a geometric multiple, the increase in the physical passage of time will become very slow. When the object flies faster, , the slower time will become. At first, many people did not believe Einstein's theory. Later, in order to prove that this theory was correct, scientists also did many experiments. In the 1950s, scientists A special clock was designed.

This clock is the atomic clock . The time of the atomic clock is very accurate. It can be said that the time difference in 20 million years is only 1 second. In 1971, scientists used high-precision atomic clocks to verify the slow clock effect. Scientists will 4 An atomic clock is placed on two aircraft respectively, and then an atomic clock is placed on the ground as a reference. Through this experiment, we can calculate two different theories, one is the slow effect of the speed clock, and the other is the gravitational clock Slow effect. At the beginning of the experiment, the plane flew in two different directions, one to the east and one to the west. Since the plane flying east follows the direction of the earth's rotation, the speed relative to the ground is the speed of the plane itself. .

The speed of the earth's rotation is subtracted from the speed of the plane flying westward. Finally, it is concluded that the atomic clock of the plane flying eastward is 59 nanoseconds slower than the atomic clock on the ground, while the atomic clock of the plane flying westward is 273 nanoseconds faster than the atomic clock on the ground. Seconds, this experiment lets us know that the speed of an object is related to time. According to this experiment, we can know that when an object flies quickly, the speed of time passing on it will slow down. The flying speed of the object The closer you get to the speed of light, the slower time will pass. When an object reaches the speed of light, time will stop. If the object can fly faster than the speed of light, time will flow backwards.

However, Einstein believed that any object with mass cannot fly at the speed of light, which means that time cannot stop. If the object flies at the speed of light, then time will not exist, but love Einstein directly rejected this hypothesis. Why can't the flying speed of objects reach the speed of light? Because when an object flies faster, its mass becomes greater. When an object flies closer to the speed of light, its mass becomes greater. When an object flies faster than the speed of light, the object The mass will become infinite. In current physics, there is no infinite matter at all, so the flying speed of an object cannot reach the speed of light.

If you say so, then humans will never be able to fly at the speed of light. Since it is impossible to fly at the speed of light, humans will not be able to fly out of the Milky Way . The current range of the Milky Way is about 200,000 light years, and the Milky Way is just one part of the universe. There are countless small galaxies in the universe that are larger than the Milky Way. The diameter of the universe that humans can currently observe is about 93 billion light-years. This range is not the entire scope of the universe. The universe may be larger than we imagine. Big, how big is the universe? At present, scientists do not have an accurate answer, but scientists are now actively exploring the mysteries of the universe. In the future, with the development of human technology, we may be able to crack the mysteries of the universe.

The editor believes that human beings are the most intelligent life on earth. Human science and technology are constantly improving. In the near future, humans may be able to create warp engine spacecraft . Scientists believe that the speed of warp engine spacecraft can Beyond the speed of light, when the speed of the warp engine spacecraft can reach level 9.9999, the speed of the spacecraft can reach 200,000 times the speed of light. This speed is faster than the speed of light. It will take about 10 years to travel from the earth to the Andromeda Galaxy. The editor hopes that humans can realize the warp engine as soon as possible, so that the flight speed of humans can be greatly improved, and only in this way can humans go out of the galaxy and explore the mysteries of the universe. Do you have anything to say about this?