Nasa unable to talk to space station
2013-02-19 20:06
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NASA
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Washington - 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 and 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 2 November 2010.
Since Expedition 1 in 2000, the space station has been
visited by 204 people.
- SAPA
