The crew of the International Space Station is safe after what may have been a false sensor alarm that forced them to isolate themselves in the Russian side of the station, NASA said Wednesday.
The crew took the precautionary action after controllers at NASA's Johnson Space Center in Houston saw an increase in pressure in a system that could have indicated an ammonia leak.
According to a NASA statement, spacecraft communicator James Kelly said it's not yet known if the 4 a.m. EST alarm was triggered by a leak or a faulty sensor. NASA officials are continuing to analyze data, he said, but there have been no signs of a leak.
On its Twitter feed, NASA said mission controllers felt the situation was "starting to look like a false indication, either a faulty sensor or computer relay."
According to the Associated Press, the station is occupied by American astronauts Barry Wilmore and Terry Virts, Russians Elena Serova, Alexander Samoukutyaev and Anton Shkaplerov and European Space Agency astronaut Samantha Cristoforetti.
NASA said it will give another update on the situation at 11 a.m. EST.
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