The ability to hit the Chinese space station's people is falling

Based on detailed calculations, scientists believe that the risk of Thien Cung 1 falling down causes injury to very small people.

Although it is not possible to pinpoint exactly where the Chinese Thien Cung 1 space station fell, but according to aerospace experts, the rate of this station inflicted minor human injury, according to Wired.

Thien Cung 1 Station on Earth orbit.(Photo: Zee News).

Thien Cung 1 is a space station launched by China in 2011 and finishes the mission in March 2016. This space station is drifting out of control and can crash into the atmosphere, falling back to Earth during the period from November 2017 to April 2018.

The European Space Agency (ESA) shortens a list of locations where China's Thien Cung 1 space station could crash when it falls back to Earth, including some countries in the continent, according to RT. .

Most spacecraft will ignite between the atmosphere when falling back to Earth, but objects of sufficient size, weighing about 100kg or more, can pass through the atmosphere and fall. Thien Cung 1 Station is 10.3 meters long and weighs 8.5 tons.

China's 8.5-ton space station is about to fall to Earth.(Video: Next).

However, scientists who are not too worried about the risk of this space station hurt people by analyzing the risk ratio of objects falling back to Earth.

Spacecraft crashed into Earth rarely intact. The intense heat and the effects of plunging into the atmosphere will destroy most small objects. Parts of larger spacecraft can still pass, depending on the material and their location in the ship.

"Think of the ship itself as the master container. The hull must be destroyed before the internal parts are exposed, exposed to heat, and there may be other small devices in these parts." Michael Weaver, aerospace engineer at Aerospace Corporation, said.

This "Russian doll" effect can determine which parts cross the atmosphere and which parts are destroyed. With enough detailed blueprints, researchers can use software to estimate the breakdown of spacecraft in the atmosphere.

Thien Cung 1 before launching into space.(Photo: Wired).

Parts made of materials with a high melting point will withstand longer, such as titanium alloy, optical parts such as glass, fuel tanks, oxygen, water tanks, usually covered with heat resistant material.

Also, not any object that passes the atmosphere can be harmful."An insulation blanket can cross the atmosphere and fall, but it will not harm people," said Marlon Sorge, senior project engineer at Aerospace Corporation.

Debris must be large enough and fall fast enough to be considered dangerous, creating energy at least 15 Jun when colliding with another object."That is similar to dropping a bowling ball from a height of about 30cm," Sorge said.

With any debris large enough to be dangerous, scientists will identify a grounding area, meaning the geographic area that the debris could hit. With cases of ships returning to controlled Earth, experts on the ground will instruct the ship to land.

The area of ​​the landing area was small and very far from where people lived. One of the famous landings is, in the South Pacific and a place away from the most land on Earth.

Extreme inaccessibility on the ocean.(Video: Next).

Heavenly Palace 1 will fall out of control so that scientists cannot accurately calculate the landing point. However, the probability of it falling on humans, causing minor injuries.

First of all, because water occupies almost half of the Earth's surface, meaning that about 75% of the debris will fall into the sea. On land, people are scattered and uneven. To analyze the risk of falling debris, researchers use data sets to estimate population and population density through a cell division system according to latitude longitude.

This cell division system helps researchers calculate the possibility that objects falling back to Earth will land on latitude, as well as the number of people at risk of falling. Accordingly, the average population density under the orbit of Thien Cung 1 is less than 25 people / km ² .

In addition, the falling debris may not be strong enough to cause injury, or just fall down on people sitting in solid vehicles or buildings. That is why the experts are not too concerned about the possibility of the Thien Cung 1 space station causing significant danger when falling to Earth.