"Space regulations don't cover the new problems emerging - interference with astronomical observations, risk of collision in orbit, risk of stuff falling on our heads, and now it is becoming clear, atmospheric pollution," says Andy Lawrence, Professor of Astronomy at the University of Edinburgh.
Feb. 25 — Journey Together Booster Bundle
。下载安装 谷歌浏览器 开启极速安全的 上网之旅。对此有专业解读
Georgina RannardScience reporter
Последние новости