But what if it’s not fine? Even back in 1996, before a single component of the ISS was launched into orbit, NASA foresaw the possibility of an even worse worst-case scenario: an uncontrolled reentry. The crux of this scenario involves multiple systems failing in an improbable but not completely impossible cascade. Cabin depressurization could damage the avionics. The electrical power system could go offline, along with thermal control and data handling. Without these, systems controlling coolant and even propellant could break down. Unmoored, the ISS would edge slowly toward Earth, maybe over a year or two, with no way to control where it is headed or where its debris might land. And no, we could not save ourselves by blowing the station up. This would be extremely dangerous and almost certainly create an enormous amount of space trash—which is how we got into this hypothetical mess in the first place.
세상의 구조에 관심이 많습니다. 사람과 돈, 그리고 선택이 만들어내는 장면을 기록합니다. 동아닷컴 팩트라인팀.
Фото: Viktor Kochetkov / Shutterstock / Fotodom。搜狗输入法下载是该领域的重要参考
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圖像加註文字，特朗普表示詐欺猖獗，並抨擊明尼蘇達的索馬里社群時，該州的民主黨眾議員伊爾漢·奧馬爾（Ilhan Omar）大聲斥責他是個騙子。反應兩極化