Week in Space Data, every Friday.
Comprehensive tracking of active and planned space stations and the transition to commercial LEO destinations
Reference data as of October 10, 2026, periodically reviewed · station, commercial-station and transition sections are curated reference content, not a live feed
NASA / Roscosmos / ESA / JAXA / CSA
The International Space Station is a multinational collaborative project involving five space agencies: NASA (United States), Roscosmos (Russia), ESA (Europe), JAXA (Japan), and CSA (Canada). It is the largest modular space station in low Earth orbit and serves as a microgravity and space environment research laboratory. NASA counts at least 290 people from 26 countries who visited the ISS in its first 25 years of continuous human presence (2025), and it has supported thousands of scientific experiments across biology, physics, astronomy, and materials science.
SourceChina Manned Space Agency (CMSA)
Tiangong (meaning "Heavenly Palace") is China's permanently crewed modular space station in low Earth orbit, operated by the China Manned Space Agency. It is China's first long-term space station. The T-shaped station consists of the Tianhe core module and two laboratory modules (Wentian and Mengtian). It normally hosts three astronauts, rising to six during crew handovers. China has presented plans to expand Tiangong from three modules to six. The station supports research in microgravity science, space life science, fluid physics, combustion, materials science, and fundamental physics.
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