Identify the edge of space

After many years of research, the scientific community has finally identified what is called the edge of space - the dividing line between the earth's atmosphere and the outer space.

With the data collected from the latest equipment manufactured by the University of Calgary (Canada), scientists claim that space starts at 118 km from the earth's surface. In the past, there were always many contradictory, complex and sometimes incorrect definitions about the edge of space. For beginners, astronauts can tap their chests claiming they have flown into space despite only crossing the line at an altitude of 80 km. Meanwhile, the border is recognized by many experts in space science at a height of 100 km, also known as Kármán road. This is also the border that the Hungarian-American scientist Theodore von Kármán calculated many years ago.

At this altitude, the atmosphere is so thin that it almost does not exist, and ordinary planes cannot operate at Kármán because it cannot achieve speed to obtain aerodynamic lift. However, the US never officially accepted the standard line and NASA used the 122 km distance as a height for the spacecraft to return to Earth. Some other opinions suggest that the edge of the space must be determined at an altitude of 21 million km because then the gravity of the earth is no longer influential.

In the new study, the University of Calgary used a device to monitor the mild winds of the earth's atmosphere and the stronger currents of charged molecules in space. The ability to collect data at an altitude of 200 km is very important because it was difficult to conduct measurements at this altitude, which is too far from the hot air balloons but too low for satellites to operate. .