Did you know that the mass of the International Space Station is about 418 tons?
1. Many believe that there is no gravity in space. This is not quite true. The International Space Station is located 350 km above the Earth. Therefore, the acceleration of free fall while (remember the school program in physics) is only 10% less than on the surface of the Earth. If the station did not move at its own speed, then, indeed, it would immediately fall on the heads of earthlings. However, the ISS develops a tremendous speed, which together with the force of attraction gives a total radial trajectory – the motion in orbit.
2. The ISS makes one revolution around the Earth every 90 minutes. As a result, cosmonauts aboard the International Space Station observe a peculiar sunrise and sunset 16 times a day and 5 840 times a year. The network has a lot of amazing pictures taken from the station.
3. Shaykh Muzafar Shukor was the first Malaysian cosmonaut. When planning his first flight, Shukor faced a very unusual problem. The thing is that this astronaut is a Muslim, which means he needs to pray five times a day. In addition, the flight coincided with the month of Ramadan, when Muslims practice fasting from dawn to dusk. Remember, we mentioned that on the ISS, sunrise and sunset occur every 90 minutes? This meant that Shukor would have problems, because the time of prayer in Islam is determined by the position of the Sun in the sky. Muslims also need to turn to God while sitting in the direction of Mecca, whose position relative to the ISS changes every second. As a result, a council of 150 clergymen allowed Shukor to depart a little from existing rules, but the case, however, is very amusing.
4. Obviously, there is no washing machine on board the ISS. But how do cosmonauts solve the problem with clothes? One of the options is to go to the ISS with enough reserve to have enough clothes for the whole mission. But it costs $ 5,000- $ 10,000 for every 500 grams of cargo, and such waste is unreasonably high. Astronauts can not return their dirty laundry back to Earth, because there is not enough space on their shuttle. Therefore, the ISS is periodically sent unmanned spacecraft. These ships can make unilateral trips to the ISS. Once they moor to the station, the astronauts unload the incoming supplies and fill the ship with garbage and dirty clothes. The spacecraft and everything in it are burning in the sky over the Pacific Ocean.
5. As you know, a person loses muscle and bone mass, if he is in space for a long time. Therefore, all cosmonauts are instructed to train every day for at least two hours. The equipment for training on the ISS is very different from the typical equipment that can be found in the fitness club. Since cosmonauts are in weightlessness on board, specialized simulators have been developed for training.
6. By the way, cosmonauts have weapons. It is designed to defend against wild animals after landing on Earth. The weapon is not stored on the ISS itself, but on the trigger.
7. By the way, the ISS is the most expensive project in the history of mankind. $ 150 000 000 000 has been invested in the construction and maintenance of the station by joint efforts of the USA, Canada, Japan, Russia, Belgium, Brazil, Germany, Denmark, Spain, Italy, Netherlands, Norway, France, Switzerland and Sweden.