Counted from open records, with the videos that explain each topic alongside. Pick a subject to see the table, the charts and the people, places and spacecraft behind the numbers.
- 694Humans in spaceEveryone who has flown: when, how often, which missions, how long, and where from.
- 4Space stationsThe International Space Station, Mir, Tiangong and Skylab: modules, expeditions and crews.
- 8Private spaceflightSpaceX, Blue Origin, Rocket Lab, Virgin Galactic, Axiom Space and others: what they fly and who has flown.
- 21Where we've beenThe planets, moons, asteroids and comets we have visited, and when we first reached each.
- 42Spacecraft out thereWhich are still active, which have finished, and where each one is now.
- 24Space telescopesBy the light they see, from gamma rays to microwaves, and whether they still work.
Where the numbers come from
Figures come from Wikidata, an open database anyone may reuse (CC0), and are checked against NASA, ESA and the other space agencies’ own pages. Where the two disagree, the page says so. Every page shows the date its data was pulled, and we leave a figure blank rather than guess it.
Data as of 2 November 2026. Source: Wikidata (CC0), with NASA and ESA