Jul 29, 2018 09:33 AM EDT
Above the sky, there is an invisible border separating the earth and the entire space. Astronomers call this the Karman lineage.
It turns out that the Karman lineage is several miles closer than the scientific community used to say. Earth has not really moved, but astrophysicist Jonathan McDowell suggests that this boundary, which shares the planet's atmosphere and the rest of space, is much closer than previously thought.
Space Sneaks Closer
A new study, published online and part of the issue of the journal "Acta Astronautica" of Octa 2018 revisits the Karman lineage, revealing that it contains about 1
The satellites that are in orbit around the Earth McDowell determines that the limit is at about 80 kilometers or just nearly 50 miles.
According to Science Magazine, of 43,000 satellites McDowell studied, at least 50 circled under 85 kilometers or 53 miles. This makes the description of his locations trickier, he adds, adding that it is not helpful to say that a satellite goes in and out every few hours.
The researcher also analyzed the return of the satellites to Earth and compared the orbital velocity to atmospheric drag. With a model that simulates the last 50 years, he checked the behavior of the border in different widths and lengths. McDowell found that the tug of the atmosphere at 66 to 88 kilometers is negligible.
Although McDowell questions the universally accepted limit, there is a lot that agrees with his suggestions. Emagazine.credit-suisse.com/app/art … = 157 & lang = DE A reasonable position for "where space begins" is around 80 kilometers, says George. English: emagazine.credit-suisse.com/app/art…7805 & lang = en Whitesides, CEO of Virgin Galactic, adds that it agrees with NASA and sets the precedent of the Air Force for letting pilots fly over this line to astronaut wings.
Why the Karman Line is Important
Even though the Karman Line is widely estimated at 62 miles In recent decades, this is not the first time that the frontier has been challenged.
As space operations become more complex and countries start farther from Earth, This invisible line could play a significant role in space law and trade practices, as Science Magazine points out that the United States even opposes a legal definition of space to limit its restrictions to avoid high-level military activities.
Defining an official boundary between the planet and space will help people navigate the murky waters of space exploration, especially in legal and commercial matters.
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