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【电子禅堂】2018祝福您

【电子禅堂】2018祝福您

太阳带领地球来到了银河深处,人类来到了西元2018年,我们的上下左右前后都是无穷无尽的星空,恭喜您,您还在宇宙的中心!值此重要时刻,大象恭祝您身心康乐!智高财广!阖家幸福!

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2018-1-1 09:52

09-30-45-715983323_m.jpg

银河年

The galactic year, also known as a cosmic year, is the duration of time required for theSun to orbit once around the center of theMilky Way Galaxy.[1] Estimates of the length of one orbit range from 225 to 250 million terrestrial years.[2] The Solar System is traveling at an average speed of 828,000 km/h (230 km/s) or 514,000 mph (143 mi/s) within its trajectory around the galactic center,[3] a speed at which an object could circumnavigate the Earth's equator in 2 minutes and 54 seconds; that speed corresponds to approximately one 1300th of the speed of light.

source: 维基百科

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