In the vacuum of space, the amount of debris—spent rocket stages, splintered satellites, micrometeoroids—numbers in the millions, all zooming about, often at 17,000 mph speeds. They’re also constantly hitting each other in a tsuris of exponential littering. Most of these pieces are tiny, and many are not anywhere near the altitude of the ISS. But the area isn’t completely clean.
The flight from Mendoza to Santiago is the bumpiest in the world by that measure. It has an average E.D.R. of .23. That’s nearly a third higher than the most turbulent routes in North America—from Denver to Jackson Hole and from Albuquerque to Denver—but still far from severe. On a Boeing 737, Cornman told me, an E.D.R. of .23 would register as moderate turbulence—“uncomfortable, especially for long periods, but people won’t hit the ceiling.” Then again, averages can be deceptive. A roller coaster might average only fifteen miles an hour if you include the slow climb up the hill. But that first drop is all you remember.
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过去，国内生产这些线材都是用来出口的，但在 2009 年开始国内的需求开始暴涨。。业内人士推荐体育直播作为进阶阅读
Alex reflects on the project, warm stories, wonderful people, and a look into the future