NASA briefly lost communication with International Space Station

By Agence France-Presse
Tuesday, February 19, 2013 13:33 EDT
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NASA image photographed through the Cupola on the International Space Station on December 29, 2011 by one of the Expedition 30 crew members. (AFP)
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The International Space Station lost communication with ground controllers on Tuesday but its commander says the crew is fine, NASA said.

It blamed a problem in a data relay system.

NASA said flight controllers in Houston were updating software on board the station’s flight computers when one of the station’s data relay systems malfunctioned.

The primary computer that controls critical station functions defaulted to a backup computer, but it was not letting the station communicate with NASA’s Tracking and Data Relay Satellites, the US space agency said.

Officials in Houston were able to communicate later with the crew as the space station flew over Russian ground stations. They instructed the crew to connect a backup computer to begin the process of restoring communications.

The International Space Station marked its 10th anniversary of continuous human occupation on Nov. 2, 2010. Since Expedition 1 in 2000, the space station has been visited by 204 individuals.

Update: CNN reported that NASA regained communication after a software glitch only allowed communication every 90 minutes when the station passed over ground stations in Russia.

Agence France-Presse
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