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中国巨型火箭失控坠落,轨道碎片风险凸显

Falling Uncontrolled from Space, Giant Chinese Rocket Highlights Risk of Orbital Debris

专家表示,中国长征5B火箭即将进入大气层,这提醒人们注意一个更加严肃的问题。

The upcoming atmospheric re-entry of a Chinese Long March 5B rocket body is a reminder of a much larger problem, experts say.
 

4月28日,长征五号B将中国空间站的核心舱送入轨道。现在,卫星和空间碎片监测小组正在密切关注这枚大型火箭的核心级,它很快将以不受控制的方式坠落到地球上。它燃烧落下的残余碎片可能会到达陆地。

The Long March 5B launched the core module of China’s space station into orbit on April 28. Now satellite and space debris monitoring groups are keeping a close eye on the big rocket’s core stage, which will fall to Earth in an uncontrolled manner soon. Leftover debris from its fiery fall could reach terra firma.
 
一份报告称,该硬件沿椭圆形轨道运行,并将在几天内坠落到地球,可能最早在5月9日。
 
One report has the hardware tumbling along an elliptical orbit and falling to Earth in a few days, perhaps as early as May 9.
 
但很难说火箭会在哪里坠落:没有人知道火箭机身坠落的确切日期和时间。简而言之,火箭体何时落地以及怎样落地我们无从得知。
 
But it’s tough to say where the rocket will come down: Nobody knows for sure the exact date and time of the rocket body’s demise. In short, the rocket body equation adds up to a dilemma.
 
更多消息请参阅Scientific American
 
Read more at Scientific American

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