What altitude represents the boundary between Earth's atmosphere and outer space?
100 km
50 km
150 km
200 km
The Karman line is named after Theodore von Kármán, a Hungarian American engineer and physicist. He was the first person to calculate that the atmosphere around this altitude becomes too thin to support aeronautical flight, since a vehicle would have to travel faster than orbital velocity to derive sufficient aerodynamic lift to support itself.
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Answers by country
100 km
50 km
150 km
200 km
answers
Greece
14
the Netherlands
10
Malaysia
13
the United Kingdom
54
Poland
1606
the Philippines
12
Germany
114
India
178
the United States
105
Australia
24
Austria
29