What real-world implication does the Kármán line determine regarding space missions?

Answer

Whether a mission falls under aviation law or space law

Although the line is conventional, its designation has significant practical and legal ramifications in the aerospace domain. The Kármán line serves as the essential reference point for determining jurisdiction. Missions operating below this threshold are generally subject to aviation laws and regulations, whereas missions operating above it fall under the purview of space law and international treaties concerning activities in outer space. This distinction impacts areas ranging from debris management protocols to licensing and operational oversight for aerospace activities.

What real-world implication does the Kármán line determine regarding space missions?

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