Theoretically, how long will it take for humans to achieve a space odyssey

Theoretically, human beings have achieved space odyssey, but it will be at least 50 years after ordinary people's space odyssey with the current level of scientific and technological development.

Humans have been roaming in space for a long time, not only roaming but also setting foot on the moon.

It will take 108,000 years.

A light-year is the distance that light travels in a year, 5,261. A light year, 4102 years, is still a question that often haunts us, 1653. But in reality, a light-year is just a unit of distance, because the speed of light is 300,000 kilometers and seconds.

One light-year is 9460730472580800 meters, or 946 billion kilometers. At a speed of 4 5 kilometers per second, it will take about 30,000 years for the rocket to get there. The fastest X 43 aircraft in the United States flies at 10,000 kilometers per hour, and it takes 108,000 years to take a light year.

I'll give you the right answer: the speed of light is 300,000 kilometers per second, the fastest speed of a spacecraft is 160,000 kilometers per second, and the speed of light is 18,750 times the speed of a spacecraft, which means that a spacecraft needs to fly 18,750 years to reach a distance of 1 light year!

Albert Einstein said that if an object could travel at the speed of light, then time would stop. Therefore, in order to verify this prediction, human beings continue to pursue high speed, but with the current human technology, the fastest speed cannot catch up with a fraction of the speed of light, the speed of light is 300,000 kilometers per second, and the fastest spaceship of human beings is only 16 kilometers per second, and human beings still have a long way to go.

In fact, it will be a long, long time before space travel is realized, at least a few hundred years later. And ordinary people can't go on space travel, because there are too many materials needed to travel in space, and not only that, but the physical fitness of people is also very high.

It is estimated that it will not be long before it happens. Ordinary people shouldn't be able to, because going to space requires rigorous training, and ordinary people's physical fitness is uneven, so it's definitely not good.

I think it will be a long time before human space travel is realized, and ordinary people are not able to do space travel, and all aspects of the body do not allow it.

It is possible that in 3 to 5 years the space brigade will be able to achieve the ** situation. If ordinary people want to go on space travel, it should take 10 to 20 years of development that is basically achievable.

I think it's a very long time, because space is so far away from Earth, and if you want to travel in space, it will probably take about a few decades.

According to the current human technology, it will take at least 100 years to realize long-distance travel in space. Because human technology is also constantly advancing.

I think it will take hundreds of years for humans to travel long distances in space, because the current science and technology have not yet reached this level.

A thousand years. Because the level of human technology is not very high, and the difficulty of space tourism is very high, it will take at least a thousand years.

It is possible that thousands or even 10,000 years have passed. Friends who often read popular science books may know that the goal that human technology is currently pursuing is actually very simple, that is, the "speed of light" in the sense of speed. When the speed of an object rises from ordinary speed to the speed of light, then everything will be different:

The famous modern physicist, Stephen Hawking, once put forward such an "orbital hypothesis", which is that when the speed of human beings reaches more than the speed of light, it can complete the great feat of "time and space travel". If the speed of light is so amazing, how long would the Earth pass if humans flew a spaceship for one minute?

First of all, when the speed of an object reaches the speed of light, we cannot analyze it using traditional physical concepts. As we all know, traditional physics, that is, since Newton pioneered the law of "universal gravitation", has long held that time and space are actually an objective "absolute relationship". However, the special theory of relativity proposed by the famous physicist Albert Einstein in his later years completely denied this statement.

Those who are familiar with science may know that Einstein's point is actually very simple: when an object reaches the speed of light, it slows down in time by an infinite number of times in the eyes of an object that has not reached the speed of light. In plain words, it is "one day in the sky, one year underground".

But when your speed really reaches the speed of light, the ratio is not at all a "day" and "a year". In fact, for this kind of contrast in extreme cases, countless scientists have been working on this work in modern times. The current authoritative view is that Dr. Eddington's previous formula through the "shrinkage effect" is simply terrifying.

If we really fly at the speed of light in a spaceship, our "seconds" will be about the same as the "ten" or even "hundred" outside. If you drive for a minute like this, I'm afraid that when you look back, the solar system may no longer exist.

To sum up, if human beings really fly a light-speed spaceship in space for one minute, the earth will be thousands of years long.

If a human person flies a light-speed spaceship in the universe for one minute, then this minute is actually longer than a minute on Earth. Because the faster the speed, the slower his time will pass. So a minute traveling at the speed of light in the universe is actually more than a minute on Earth.

When humans flew a light-speed spaceship in space for one minute, one minute passed on Earth, but the Earth phenomenon was observed on a spaceship one minute ago.

According to Einstein's special theory of relativity, the faster the speed, the slower time becomes, which is known as the clock-slow effect.

If you ride the most advanced spaceship in the United States, the solar system, it will take 1000 years. And if it leaves the solar system at the speed of light, it will take a year.

At Voyager 1, which is currently traversing the solar system, at a speed of 61,452 kilometers per hour, it will take 17,574 years for the spacecraft to actually leave the solar system.

It takes about a day because it's far away, and although it's very fast and you feel the light, you still need a little time.

Current technology is not yet able to measure how many years the earth will live, but as long as human beings do not destroy the earth, I believe that they can live longer, and space is even more impossible, first of all, how to survive on the earth.

The interaction between organisms and the polluted environment, and the migration, transformation and accumulation of pollutants in the ecosystem. Pollution refers to situations in which the increase in certain substances or energies in the environment directly or indirectly endangers humans. For example, industrial waste, traffic noise, and nuclear bomb radiation are all harmful to human beings.

Pollution is often the result of human activities, but certain natural phenomena (such as volcanic eruptions) can also cause pollution.

The main causes of air pollution --- man-made causes of air pollution are: industrial pollution sources; domestic pollution sources; traffic pollution sources; Agricultural sources of pollution. In China, soot and automobile exhaust are two important sources of air pollution.

Water pollution --- today, and there are different degrees of water pollution in rivers, rivers and lakes in many parts of China. In particular, many surface waters, such as large and small rivers and ponds located in densely populated areas, are directly affected by various solid wastes, livestock manure and various types of wastewater.

Or it is transferred to the river, coupled with no management, and basically no dredging, so that most of the water quality changes from quantitative to qualitative, from clear to black and smelly, and even becomes a natural garbage bin, and even the water storage function is gradually lost.

Indoor pollution--- Indoor pollution usually refers to the intrusion of indoor air by chemical and biological pollution, and the air quality decreases. The combustion of various fuels (such as coal, gas, petroleum gas, firewood and grass, etc.) is an important part of indoor pollution**. In addition, kitchen fumes, indoor smoking and interior decoration are used.

Insulation, adhesives, plastics and paints can emit harmful substances to the human body, and even radioactive substances in building materials can also radiate from cement floors, walls and ceilings, causing harm.

Ecological pollution. Soil contamination --- ingress of industrial wastewater, domestic sewage and solid waste, pesticides, fertilizers, livestock excrement, biological residues, and atmospheric deposition.

Soil and accumulate to a certain extent, which can cause soil quality to deteriorate. In some places, sewage is used to irrigate fertile fields, which directly causes serious soil pollution, brings pollution of agricultural and sideline products, and endangers the health of consumers.

Urbanization - a series of problems such as housing shortage, traffic congestion, resource shortage, environmental degradation, urban diseases caused by the rapid expansion of urban scale, are also an important part of ecological destruction. Such as urban heat island effect, urban noise, urban sewage, urban garbage, urban smoke, urban green space destruction, urban light pollution, etc.