>>> unbeknownst to most folks on earth the international space station makes a trip around the world every 90 minutes . carrying six adults around 17,000 miles an hour. they have had anxious moments on board over the last 4 hou24 hours. they use an ammonia cooling system. when the ammonia exits into the cold vacuum of space it looks like snowflakes. they have stabilized the problem but there is a spacewalk tentatively sclj tentatively scheduled for tomorrow so two of them can take a look.
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