Assertion: km | /r/HasProperty | 50 miles
Facets:
Source sentences:
text: Recent works by Jonathan McDowell (Harvard-Smithsonian Center for Astrophysics) and Thomas Gangale (University of Nebraska-Lincoln) advocate that the demarcation of space should be at 80 km (50 miles; 260,000 feet), citing as evidence von Kármán's original notes and calculations (which concluded the boundary should be 270,000 ft), plus functional, cultural, physical, technological, mathematical, and historical factors.
text: While the Kármán line is defined for Earth only, if calculated for Mars and Venus it would be around 80 km (50 miles) and 250 km (160 miles) high, respectively.