Space Mission
International Space Station
A continuously crewed laboratory in orbit since 2000.
The largest human-made object in space, orbiting 400 km up at 28,000 km/h. Visible to the naked eye as a fast-moving bright point.
Spotting it
Use a sighting site like NASA's Spot the Station. Looks like a bright, steady aircraft moving silently across the sky in 2–6 minutes.
See also