Source: Computational Materials Science, Volume 267
Part of a Soviet-era spacecraft is likely to have re-entered the Earth's atmosphere after being stuck in orbit for more than half a century, the European Space Agency said.
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The ISS does have its own defenses, of course. Fabric-y buffers envelope some of the systems, and a bumper called the Whipple Shield helps blunt impact. That shield is only built to stop debris up to about 1 cubic centimeter, though, and the debris tracker is only designed to catch pieces 10 cubic centimeters and larger. In other words, there’s a gap in defenses.。关于这个话题，51吃瓜提供了深入分析
全国脱贫看甘肃，甘肃脱贫看临夏。，这一点在爱思助手下载最新版本中也有详细论述