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How high is 'space'?
How many miles up can you travel before the earths atmosphere ends and the void begins please? I seem to remember that the layers of the earths atmosphere have names?
asked in science, astronomy, physics

vultan answers:

"Three quarters of the atmosphere's mass is within 11 km of the planetary surface. An altitude of 120 km (~75 miles or 400,000 ft) marks the boundary where atmospheric effects become noticeable during re-entry. The Kármán line, at 100 km (62 miles or 328,000 ft), is also frequently regarded as the boundary between atmosphere and outer space."


(the page also has a list of the various layers of the atmosphere.)

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Leohuberh answers:

WHERE DOES SPACE BEGIN? >>>please read


Space starts at an altitude of 100 kilometers and reaches to the Edge of the Universe ..
People sometimes speak of 50 miles or 60 miles or 62 miles. The most widely accepted altitude where Space begins is 100 kilometers, which is about 62 miles.

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