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Space drugs factory denied reentry to Earth (gizmodo.com)

submitted 1 year ago by [email protected] to c/[email protected]

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[–] [email protected] 15 points 1 year ago* (last edited 1 year ago)

The FAA designates 18,000 ft to flight level 600, which is 60,000 ft above sea level, as class A airspace. Any aircraft needs explicit permission to enter class A, so that's normally only when an airliner is climbing to cruising altitude, but it would also occur when a spacecraft is descending through 60,000 ft.

Other countries, I don't know exactly, but they all function fairly similarly.