If you want to travel in space, why can't you be willful if you have money?

In 200 1 year, Dennis Toti, a businessman from California, USA, went to the space station on the TM-32 spacecraft of the Russian Federation, realizing the first commercial orbital flight, which cost about 20 million US dollars and took 8 days before and after. Since then, commercial railway tourism has begun to rise. Up to now, 7 people in * * * have achieved self-funded railway tours, with a starting price of/kloc-more than $0/0 million and a time of about one week. The high price makes low-earth orbit tourism almost unattractive, only a few super-rich people can afford it, and they have to go through a series of strict physical examination and training before they can become space tourists.

The flight mode in near-earth orbit is very different from that in suborbital orbit. The maximum height of the latter is only about 100 km, and it only lasts for a few minutes, while the height of low earth orbit is about 100 km. According to the height of the International Space Station (ISS) of 350 kilometers, it can orbit the Earth 15 times a day on average, and it is in weightlessness at any time. Therefore, if tourists want to travel in low-earth orbit, they should at least use tools such as launch vehicles to break through the first cosmic speed, which requires higher physical conditions for tourists. Totti is not only a wealthy businessman, but also a scientist at NASA's Jet Propulsion Laboratory. Before going into space, Totti was trained in the Russian Astronaut Training Center. All kinds of training programs for active astronauts need to meet the standards before they can get permission to enter low-earth orbit.

At present, Russia is the only country that operates low-earth orbit tourism and needs to enter the space station by Soyuz spacecraft. So far, all seven space tourists need permission from the Russian Space Agency and use the Baikonur launch center in Kazakhstan to enter space. Because Russia's manned space flight is at the forefront of the world, there is only one person in the world who can enter the space station, so it is inevitable to increase the price by sitting on the ground. The seventh tourist spent $35 million to enter the space station, and the price of seats sold by Russia to NASA has soared to $70 million, almost equal to the cost of a launch, which also prompted NASA to make up its mind to restore its manned space flight capability.

Low-earth orbit tourism seems to have unlimited scenery, but it is not difficult. After all, getting into orbit is not a fun thing. First of all, in the ground training center, you need to bear at least 7 to 8 G, which is equivalent to the weight of your own body 7 and 8. Excellent astronauts can probably bear 10G, and facial muscles will be deformed. Secondly, the shock, high G environment and even danger brought by rocket launch need tourists to face. Furthermore, after entering the orbit, the blood of the body will concentrate on the head, and the sense of direction will be temporarily lost, and even nausea and vomiting will be caused. If your vestibule function is not very smooth, even if you are rich, entering the orbit will be like suffering.

In the next few years, North American commercial manned space flight will usher in a new round of explosion. Private companies such as Boeing, Space Exploration Technologies, Sierra Nevada and Blue Origin will launch their own low-Earth orbit travel packages and use their own spacecraft. Space exploration technology company is currently in an absolute leading position. After the reusable rocket technology matures, the cost of entering low-earth orbit will be greatly reduced to millions of dollars, and visitors can enter the space station on the manned version of the "Dragon" spacecraft provided by the company. The biggest task of manned spaceflight is to put people into orbit safely and then return to the ground, so ensuring people's safety belongs to the first place. Under normal circumstances, manned space flight needs to be equipped with thousands of medicines and more than a dozen emergency surgical kits, which is equivalent to a mobile intensive care unit. It can also be seen that low-earth orbit tourism tests not only economic strength, but also excellent physical conditions.

(Author: Seldon)