The ISS orbits at 408 km altitude, circling Earth every 90 minutes at 28,000 km/h. During twilight it reflects sunlight — appearing as a bright, steadily moving star.
Start Tracking
Enter your ZIP code and we'll notify you when conditions are right.
Get alerted when the International Space Station is visible from your location. Look up and witness humanity's outpost in orbit.
The ISS orbits at 408 km altitude, circling Earth every 90 minutes at 28,000 km/h. During twilight it reflects sunlight — appearing as a bright, steadily moving star.
Enter your ZIP code and we'll notify you when conditions are right.