Israel launches air strikes against Iran
Debris actually pelts the ISS all the time, and noticeable dents and cracks line the exteriors. But should something fully breach the station, cabin atmosphere will seep into the vacuum of space and alarms will go off. Pressure gauges will confirm to astronauts that the station has, almost certainly, been hit, and the speed of the seepages may indicate how much time the crew has to respond. According to one NASA estimate, a 0.6-centimeter-wide hole leaves 14 hours to plug the leak. A 20-centimeter hole leaves less than a minute.
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AEDT — 1 a.m. (Feb. 28)。服务器推荐对此有专业解读
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Author Correction: Myocardial reprogramming by HMGN1 underlies heart defects in trisomy 21