It is likely that man has not yet left the Earth's atmosphere.
Life on Earth in the form that we observe around it became possible thanks to a thin layer of gas around the planet, which we call the atmosphere.
In the last century, the first man Yu. Gagarin went into space, and then even to the moon. But as recent studies have shown that even a flight to the moon did not allow us to cross the boundaries of the atmosphere of our Earth.
The atmosphere and its boundaries
From a formal point of view, the border of our atmosphere is at an altitude of 10,000 kilometers. And at an altitude of 100 km from the surface, there is the so-called Karman line, which is a conditional boundary between the atmosphere and open space.
Already at the upper layer of the atmosphere - the exosphere, which begins at about 800 km from the Earth's surface, there is a halo consisting of geocorona hydrogen atoms. So, according to early studies, this geocorona spread at a distance of about 200,000 km from the Earth. But as it turned out, this is not entirely true.
After checking the scientific data collected from 1996 to 1998, Russian scientists came to the conclusion that the geocorona extends to a distance of approximately 630,000 kilometers from Earth. And this is a minute twice as far as the orbit of our natural satellite, the Moon.
And it turns out that from a technical point of view, our Moon is located directly in the atmosphere of the planet.
And despite such an achievement as the landing of a man on the moon, purely technically, humanity has not yet gone beyond the boundaries of the atmosphere of its native planet.
Fact. The presence of the geocorona was recorded by the Apolon 16 astronauts, who captured it on a camera in 1972.
Subsequently, the geocorona was recorded by especially sensitive SWAN instruments located on Solar and Heliospheric.
So it turns out that only a flight, for example, to Mars will really be the first step of mankind beyond the bounds of its native home - the Earth.
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