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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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A trial in the US found that applying stem cells from the mother’s placenta to her baby’s spine while it was being repaired was safe and improved the child’s mobility and quality of life.。关于这个话题，服务器推荐提供了深入分析
It was "surprise gifts, thoughtful gestures and the kindness of a cup of tea in bed". Warming the car on a cold morning. Picking wildflowers and putting them in a vase. Sharing a private smile at a party.
Анна Габай (Редактор отдела «Силовые структуры»)