4月28日,这颗后来被命名为2020 HS7的小行星掠过地球,最近距离比地月平均距离近9倍。
At a distance of 42,735 kilometres (26,554 miles) from the centre of Earth - the Earth-Moon distance is 384,400 kilometres (238,855 miles) from centre to centre on average - 2020 HS7 pulled off one of the closest asteroid flybys we've ever seen.
地心到月球中心的地月平均距离是384,400千米(238,855英里),2020 HS7距地心最近距离是42,735千米(26,554英里),是我们所见过的掠过地球时距离最近的小行星。
And it skimmed the nearest satellite by just 1,200 kilometres (746 miles). That may sound a bit scary, but neither we nor our satellites were in any particular danger.
它与离它最近的卫星之间的距离仅为1,200千米(746英里)。这可能听起来有点吓人,但我们和卫星都没有太大的危险。
"Small asteroids like 2020 HS7 safely pass by Earth a few times per month," said astronomer Lindley Johnson of NASA's Planetary Defense Coordination Office just prior to the flyby. "It poses no threat to our planet."
美国国家航空航天局行星防御协调办公室的天文学家Lindley Johnson在小行星掠过之前说:“像2020 HS7这样小型的小行星每个月都会安全掠过地球几次,对地球并无威胁。”
In fact, 2020 HS7 was a good thing. It allowed scientists to test their detection, observation, follow-up and prediction capabilities on a small near-Earth asteroid. And they showed they were able to predict and track the path of 2020 HS7 with incredible accuracy, even with just a day's notice.
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