Lead
Since the beginning of the 20th century, human beings have made unremitting efforts to explore the universe, in addition to actively exploring the solar system, but also to explore the outer interstellar space.
However, no matter how much effort and money human beings have put in, space exploration is still full of difficulties, whether in terms of resources, funds or energy, what kind of planning is needed.
And even if the human probe Voyager 1 continues to advance at a rate of 3.559 astronomical units per year, it will take more than 5,600 years to fly out of the solar system, so even if it advances at the speed of light, can it break through the solar system, and what challenges will it encounter?
First, a huge amount of money has been invested, but it is difficult to surpass.
In the past decade alone, mankind has invested more than one trillion yuan in space, and these funds are not only used for the construction of ground stations, but also for the development and launch of probes.
As the world's earliest established aerospace research institution, NASA's exploration program is extensive to every planet in the solar system, and even some large stars in outer space, such as Europa, Pluto and other planets are included in its exploration program, and Voyager 1 appears in such an exploration program.
In 1977, Voyager 1 was launched, first in 1979 and then Saturn in 1980 and 1981, but even so, Voyager 1 did not fly out of the solar system, and in 1990, it explored the inner and outer stars of the solar system.
In 2013, Voyager 1 continued to move forward and finally flew out of the solar system, but even so, the sensor still could not stop, it would continue to move forward into the universe until it collided with a star, or until the electricity it carried ran out, but even at such an astonishing speed, it would take more than 5,600 years for Voyager 1 to fly out of the solar system, so what if the speed of the probe doubled again?
Even if Voyager 1's speed were to increase to 7 AU per year, humans would not be able to fly out of the solar system in their lifetime, because the speed of light would not be able to break through the solar system anyway.
2. Why can't you fly out of the solar system?
People will wonder why the speed of light can't fly out of the solar system even if Voyager 1 is twice as fast, so why can't the speed of light allow humans to fly out of the solar system?
This starts with the relationship between the expansion of the universe and the speed of light, as the fastest speed in nature, the speed of light is very amazing, which makes even the planets in the Milky Way galaxy very far away from the earth, and it takes thousands of light years to feel the sunlight on the earth today, but even so, the speed of light still cannot surpass the Milky Way, let alone the outer space beyond the Milky Way.
In the universe, there is a very powerful force, that is, the power of the expansion of the universe, even the speed of light cannot escape the speed of the expansion of the universe, and this is why the speed of light cannot make the probe fly out of the solar system, so how fast is the expansion of the universe?
There is a speed of about 7.2 gigaseconds, which is very amazing, if the human detector can carry some information about people, then after more than 20 years, the speed of the detector will exceed the speed of the expansion of the universe, and then in response to this problem, people have carried out simulations, when the speed of the detector exceeds the speed of the expansion of the universe, human beings will not be able to control the detector, because the speed of the detector has exceeded the speed of light.
So if humans want to fly out of the solar system, what do they need to do?
The first thing to be solved is the problem of survival of human beings after flying out of the solar system, and human beings will face many difficult problems such as survival, health, and resources.
In the solar system where human beings live, there are many planets where human beings cannot survive, and even human bodies are very fragile, so human explorers need to overcome some of these fragile problems with their bodies, such as in weightlessness, human bones, muscles, endocrine and other organs will be damaged to varying degrees, and human bones will not have bone loss in a weightless state, which will make human bones very fragile, which is why, in space, People use muscles to propel, not bones, so after humans fly out of the solar system, explorers need to change the weightlessness from the weightless state on Earth to the gravitational state where humans can live normally.
3. The challenge of flying out of the solar system.
In addition, after human beings fly out of the solar system, they also need to solve the survival needs of human beings, such as food, water, etc., and these are very difficult problems, because after human beings leave the solar system, they will face the infinite depths of the universe, and there are no resources needed by human beings, so human beings need to carry some resources to the depths of the universe.
But even so, human beings cannot carry all the resources to the depths of the universe, because human detectors are limited, so human beings need to solve the problem of how to survive in the depths of the universe, and how to recycle some resources in space.
Despite the limited technological level of mankind, mankind has made great progress in the aerospace industry, and mankind has made many breakthroughs in the aerospace industry, such as launching artificial satellites, manned spacecraft, etc., and also landed on the moon in 1969, and mankind has also established a space station in space.
People's desire to explore space will continue to promote the development of human spaceflight, even if human beings cannot leave the solar system at present, but no one can guarantee that one day in the future, human beings will not have technological breakthroughs, and human beings will not be able to realize the exploration of interstellar space, but this method of exploring interstellar space is likely to be far faster than the speed of light technology, such as wormholes, hyperspace crossing, etc., and these technologies are still very cutting-edge in today's view.
But in any case, human beings will explore space, human beings have an unlimited desire to explore, although the speed of light is the fastest speed in the universe, but there will also be many human explorers to challenge it, there are human explorers, there are human astronautics, no matter how many difficulties human beings encounter, they will also overcome.
epilogue
In the process of exploring space, human beings not only encounter technical difficulties, but also some ethical and legal issues, such as the development of space resources, the search for life in outer space, etc., but through the unremitting efforts of human beings, we will be able to find solutions, and at the same time, on the road of space exploration, human beings can also cooperate with countries around the world, such as Sino-Russian cooperation in the construction of an international lunar scientific research station, etc., which can allow mankind to usher in more development opportunities in the field of space exploration.