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.
I remember sending my first email in the early 1990s, a clunky experience which meant logging on to two different computer systems. I thought it would never replace the much swifter fax. The internet was already revolutionizing the flow of information and, as the editor of The Guardian’s gargantuan media section in the U.K. (printed every week with 50 pages of job ads), I was the proud owner of one of the first ‘WAP-enabled’ mobile telephones. I mused in the front-cover headline whether this was “the end of newspapers?”.，这一点在PDF资料中也有详细论述
What Made It Work。业内人士推荐PDF资料作为进阶阅读
Раскрыты подробности о фестивале ГАРАЖ ФЕСТ в Ленинградской области23:00
Что думаешь? Оцени!