Top ISS 'safety risk' is a leak that has been ongoing for 5 years, NASA(01)

Top ISS 'safety risk' is a leak that has been ongoing for 5 years, NASA(01)

Image gallery: Nasa Iss Leak

Photos reveal how NASA's ISS has been leaking and cracking for years Top ISS 'safety risk' is a leak that has been ongoing for 5 years, NASA Astronauts Work to Seal Air Leak on Space Station. Here's How. Space