International Space Station

The International Space Station is the largest structure humans have put in space. It has been lived in without a break since November 2000. This page lists the modules it is built from, and every long-stay expedition and the people who flew on them.

• 1998first module launched (Zarya)
• 21modules and major parts in our list
• 74long-stay expeditions
• 167people on those expeditions

First module launched

20 November 1998 (Zarya)

Mass

419,725 kg

Operators

National Aeronautics and Space Administration, Roscosmos State Corporation, Canadian Space Agency, European Space Agency, Japan Aerospace Exploration Agency

In orbit for

10,209 days (to 2 November 2026)

The modules

Modules are listed in the order they were launched. Where we have videos about a module, the row links to them.

Every expedition and its crew

An expedition is a long stay: the crew who live on board between two crew changes. People are linked where the site has videos about them.

Who has lived on the station

Videos about the station

How these numbers are counted

Expeditions and their crews come from Wikidata, which lists 74 of the 75 expeditions so far (Expedition 65 is missing from its records), and gives start and end dates for most of them. Visitors who stayed less than a full expedition (Space Shuttle crews, short Soyuz visits, private astronaut missions) are not in the expedition list, so the people counted here are fewer than everyone who has been aboard. The module list follows Wikidata’s “has part” record for the station and includes major robotic parts such as Canadarm2.

Data as of 2 November 2026. Source: Wikidata (CC0), checked against NASA