With all the large asteroids hitting the news lately, it would have been easy for a small one to sneak under the radar. In fact, one very nearly did. On April 27, astronomers discovered a new asteroid, a little pixie of a space rock between 4 and 8 metres (13 to 26 feet) across.
最近很多大型小行星登上资讯,小号的小行星就很容易从雷达下溜走。有一颗小行星就差点溜掉了。4月27日,天文学家发现了一颗新的小行星,是一小块太空岩石,直径在4到8米(13到26英尺)之间。
It was already close to Earth at this point, and the probability of a collision was calculated at around 10 percent. At its size, it would have burnt up on atmospheric entry, so it posed no threat to humans anyway.
此时已经距离地球很近了,撞击概率是10%左右。这个尺寸的小行星进入大气层就会烧毁,所以对人类没有威胁。
But the asteroid's trajectory would bring it very close to the geostationary ring, the volume of space around Earth in which bodies can maintain geostationary orbit. That space is packed with satellites.
但这颗小行星的轨道使它非常靠近地球静止环,这是地球周围的一部分空间,其中的物体可以在地球静止轨道内运行。这一空间里到处都是卫星。
On April 28, this asteroid - later named 2020 HS7 - skimmed past Earth at a distance around nine times closer than the average distance of the Moon.
【一颗小行星刚刚近距离划过地球,比月亮还近】相关文章:
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