This story was updated at 12:03 p.m. ET NASA engineers are still perplexed by a stuck valve in the International Space Station's cooling system and may even add an extra spacewalk to fix it to the ...
It's unclear when NASA will resume the crucial test. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. NASA's second attempt to fuel its Artemis 1 ...
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