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Space station

A crewed spacecraft designed to stay in orbit long-term and be visited by other vehicles, rather than to travel anywhere itself.

Why it matters

A station is infrastructure, not a mission: its value is that it keeps people and experiments in orbit continuously, so research does not restart from zero on every flight. That also makes it a fixed demand for launch - crew rotations and cargo resupply on a schedule, which is a rare thing in an industry of one-off flights. The looming question is what replaces the current arrangement when the existing station retires, and whether commercial operators can carry that demand.

In our data

Station traffic is a steady presence in our tracker: crew rotation and cargo resupply flights recur throughout the manifest, and our data classifies them as crewed and cargo spacecraft rather than by orbit, because their destination is a vehicle rather than an altitude.

Missions we track
Where we use it
Not to be confused with

A free-flying laboratory or a capsule mission, which carries experiments or crew for days and then returns. The defining feature of a station is permanence and the ability to be revisited.