Astronauts are preparing for possible spacewalks happening as early as this week to make crucial repairs.
They've been working around the clock since last week to figure out the best way to go about it. Last Wednesday, one of the two ammonia cooling systems on the U.S. side of the ISS shut down as soon as it reached its pre-set temperature limits.
Since last week, engineers have been trying to fix the problem remotely from Mission control, trying to regulate the cooling loop affected. At this time, at least two, if not three, spacewalks could happen in the near future.
The first spacewalk is scheduled for this Thursday, December 19. NASA is planning a briefing Tuesday or Wednesday, to announce their final decision.
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