CNN News: “悄無聲息”的爆炸

My entire apartment started shaking and there was a huge boom. I was just terrified. I had no idea what was happening.

我的整個公寓開始搖晃，然后有一個巨大的隆隆聲。我嚇壞了,不知道發(fā)生了什么事。

AZUZ: So if a meteor explodes in the atmosphere and no one’s around to hear it. Does it make a sound? NASA said it did. The fireball that blew up 16 miles over the earth’s surface in December was the second most powerful one to enter our atmosphere in 30 years according to the space agency. So why wasn’t this reported in December? Because scientists just noticed it. It was originally detected by military satellites and reported to NASA afterward. Why didn’t pictures and video go viral on social media like those of other fireballs do?

所以如果一顆流星在大氣中爆炸，而周圍沒有人聽到它。它發(fā)出聲音了嗎?美國國家航空航天局(NASA)表示確實如此。據(jù)美國宇航局稱，去年12月在地球表面16英里處爆炸的火球是30年來進入大氣層的第二大火球。那么為什么在12月沒有報道呢?因為科學家們才剛剛注意到。它最初是由軍事衛(wèi)星探測到的，隨后向美國宇航局報告。為什么圖片和視頻沒有像其他火球一樣在社交媒體上走紅呢?

Because it happened over the Bering Sea in a pretty remote part of the world and relatively few people noticed. What exactly caused a blast that powerful? A meteor that scientists say was probably a few meters across. That’s all it takes to release 173 kilotons of energy and for reference one kiloton is equivalent to 1,000 pounds of TNT. Should you be worried about another one? Scientists say, no. Most fireball events are smaller. There have already been five note worthy explosions in 2019.

因為它發(fā)生在白令海之上，在世界上一個相當偏遠的地方，相對很少有人注意到。究竟是什么引發(fā)了如此強大的爆炸?科學家說，這顆流星可能只有幾米寬。這就是釋放173000噸能量所需要的，作為參考，1000噸相當于1000磅TNT。你應該擔心其他的爆炸嗎?科學家們說不需要。大多數(shù)火球項目都比較小。2019年已經(jīng)發(fā)生了5次值得注意的爆炸。