Has anyone ever traveled in space?

The real space travel project was put forward by the Russian Federal Space Agency, and the first person to realize space travel was dennis tito, a wealthy American businessman. In 200 1 year, Tito made a week-long space trip. Moreover, the cost of his trip far exceeds most people's imagination, and it can even be described as sky-high price. He once sighed in the "Space Diary": "On the seventh day, the holiday is over, and the $20 million is over! Returning to normal gravity, dragging heavy arms and legs, the only thing that becomes lighter is the wallet! "

Tito's space trip is regarded as the beginning of commercial space travel. According to media reports, up to now, seven tourists who have been sent to the International Space Station have paid a "sky-high price" for this. This means that space travel is only a tourism project for the rich, and the dream of space travel for ordinary people is still out of reach.

Generally speaking, "space travel" is divided into three types: Asia-Pacific high-altitude flight, suborbital flight and orbital flight. Subspace flight, strictly speaking, does not reach space, and its destination is located in the air layer below space, where the "scenery" and body feel are similar to space; Suborbital flight, you can feel weightlessness and see the general situation of the earth; Orbital flight, similar to the orbital height of the International Space Station.

Although these three kinds of "space trips" have different impressions, they all need the support of national space technology and expensive expenses. In other words, similar to a tour group, whether your space tour can take place depends on two conditions: first, whether space technology has the ability to "send you to heaven"; Second, can your wallet afford the gas money? It is gratifying that China people's "space dream" is getting closer and closer. From 2003, when Yang Liwei went into space by Shenzhou 5, to the successful docking of Tianzhou-1 and Tiangong-2 in 20 17, all the achievements made in space exploration in 14 showed China's powerful space strength.