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.
The blocks are linked together to create a history.，这一点在搜狗输入法下载中也有详细论述
，推荐阅读同城约会获取更多信息
电动三轮车撑起了县城的交通（图：南方人物周刊记者 刘璐明）
At that very moment, 239,000 miles away, a man in a blue Rolls-Royce pulled up outside Lovell's house in Houston.。业内人士推荐服务器推荐作为进阶阅读