What's the average time to complete a space mission from launch to landing?

Asked on: 7/26/2025

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The duration of a space mission varies widely, but a typical crewed mission to the International Space Station lasts about 6 months.

Estimated Duration: 180 days

Space mission durations depend on the mission type. Crewed missions to the ISS average 6 months, while lunar missions (like Apollo) last about 8-12 days. Uncrewed planetary missions can take years—Mars missions often require 6-9 months for transit alone. Factors like distance, mission objectives, and spacecraft speed determine the timeline. Shorter missions (e.g., suborbital flights) may last minutes to hours, whereas interplanetary probes (e.g., Voyager) operate for decades. Training, launch preparation, and post-landing recovery also add to the total time.