How Fast Does the ISS Travel Across the Sky?
The International Space Station (ISS) is the world's largest artificial satellite, orbiting the Earth at an altitude of over 400 km. As one of the most recognizable objects in the night sky, the ISS is a symbol of humanity's exploration of space. But just how fast does it travel? The ISS orbits Earth at a speed of approximately 28,000 km/h. This is equal to 7.7 km/s or 17,500 mph. This means that the ISS travels around the entire Earth in just over 90 minutes, completing one orbit every 92 minutes....