If humans had the ability to travel interstellarly, they would be better able to explore the vast expanse of the universe.
In recent years, several companies have gained attention on space tourism projects that are preparing to send tourists into space or even fly around the moon, the more famous ones being Jeff Bezos' Blue Origin Company, and Elon Musk. Musk's Space X Company.
However, to truly achieve this goal, there are many technical and cost issues to overcome, and space in a broad sense refers to the altitude of more than 100 kilometers above the earth's sea level, so far, only a few hundred people in the world have landed in space, but with the following four new technologies, things are much easier.
1 Brand new engine
At this stage, we use fossil fuels in space exploration, and sometimes the fuel on a space shuttle is 20 times heavier than the spacecraft itself, and there will undoubtedly be more efficient and cheaper fuels in the future.
In the future, spacecraft will no longer use fossil fuels, but instead ion engines, the so-called ion engines refer to spacecraft equipment that uses ionized gases as propellant, which is the best performing and most mature system.
At this stage, the power of the new generation of ion thrusters has reached the order of 7 kilowatts.
NASA once designed a xenon thruster that uses solar and xenon to power the spacecraft.
2 solar sails
A solar sail is a spacecraft that uses the light pressure of the sun to fly, and the sun has very little light pressure on a single object.
There is air resistance on Earth, and spacecraft cannot be used, but it is different in space, if the area of the solar sail is large enough, the spacecraft can get a lot of acceleration in space.
But sailing with solar sails has one drawback, which is that it is too dependent on the sun
3 Ark
The speed of light is insurmountable, the universe is vast and boundless, and interstellar navigation is destined to be a long and boring process.
If we want to go to a more distant galaxy, many people will spend their lives on the ship, so we must build an ark that can be self-sufficient.
The giant ark is not only a tool for interstellar navigation, but also the last guarantee for human beings to escape from the earth.
4 Space elevators
Of course, if you want to experience space sightseeing, you don't have to use the space shuttle, and space elevators can also meet this demand.
The space elevator was proposed by the famous rocket science pioneer Tsiolcoffs, the main body of which is a cable that permanently connects the space station to the earth's surface, making it easy to transport any cargo from the ground to the space station.
The cable requirements of the space elevator are very strong, able to withstand the huge tension and the harsh conditions of space, and the nano carbon tube is the most promising material for the space elevator cable.
The operation efficiency of the space elevator is 100 times that of the space shuttle, and with the space elevator, ordinary people can also appreciate the fascinating scenery of space.