You Traveled Far Last Year

过去的一年里你已走的非常远,约5.84亿英里——即便你只是呆在家里!
时间:2018-01-03 单词数:1890

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导读:根据NASA的说法,去年只要你在地球上,你就已经绕着太阳转了约5.84亿英里的距离。

过去的一年里你已走的非常远_英语新闻

Happy New Year! And if you’ve been away from work for a few days, you deserve some time off. After all, you’ve traveled far. Even if you just stayed at home. According to NASA, just by being on the planet Earth in the last year, you’ve zipped about 584 million miles around the sun. At an average speed of about 67,000 miles per hour. [Siren sound.] Hey, I wasn’t speeding—in my inertial reference frame.

新年快乐!如果你已几天没有工作了,你的确应该休息一下。毕竟,你已经旅行了很远一段距离。即便你只是呆在家里。根据NASA的说法,去年只要你在地球上,你就已经绕着太阳转了约5.84亿英里的距离。平均时速约为67000英里。[警笛声]嘿,在我的惯性参照系中,我并没有超速哦。

Of course, the trip was not a perfect circle. As Kepler showed, the earth’s orbit is an ellipse, with the sun at one of the two focal points. He also figured out the planet goes faster when it’s at perihelion, nearer the sun, than when it’s at aphelion, its furthest distance. Which would explain why summer seems to zip by, except that the seasons are a function of the tilt of the earth’s axis, not its different distances from the sun. And the earth rotated 365 and a quarter times during its sweep around the sun. The trip took 8,766 hours. Or 525,960 minutes. Or 31,557,600 seconds. Tick tock.

当然,这个旅程的轨迹并不是一个完美的圆圈。正如开普勒所展示的,地球轨道是一个椭圆,太阳位于椭圆的两个焦点之一。他还发现,地球在近日点,也就是靠近太阳的时候,会比在远日点即距离太阳最远的地方走得要快一些。这也可以解释为什么夏天似乎缩短了一些,另一个原因是季节是地球轴倾斜的函数,并非它们与太阳的不同距离。地转绕太阳旋转一周是365又1/4天。这趟旅行耗时8766小时(相当于525960分钟,31557600秒。)滴答滴答,时光飞逝。

来源:科学美国人爱语吧作者:Penny

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