NASA spokesman Josh Byerly said something went wrong around 9:45 a.m. EST Tuesday during a computer software update on the station. The outpost abruptly lost all communication, voice and command from Houston.
About an hour later, while flying over Russia, station commander Kevin Ford was able to briefly radio Moscow that all was well and they were working on the problem.
Byerly said the problem should be fixed today. Until then, astronauts can talk with Moscow control for a few minutes every 90 minutes.