历书时 - 爱百科 与质心力学时(Barycentric Dynamical Time,TDB)取代,在1991年TDT从新更名为地球时(Terrestrial Time,TT)。 在19世纪末期,地球的自转(也就是说日的长度)被发现不仅不规则,而且在缩短中。事实上,观测太阳
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就在我们参观时,一件名为“通往地球尽头的竞赛”的展品刚刚完成。
When we visited, an exhibit called The Race to the End of the Earth, was just being finished.
就在我们参观时,一件名为“通往地球尽头的竞赛”的展品刚刚完成,它展示的是1912年罗尔德·阿蒙森和罗伯特·斯科特为争夺征服南极点第一人的称谓而进行的竞赛。
When we visited, an exhibit about the race between Roald Amundsen and Robert F. Scott to be first to the South Pole in 1912, called The Race to the End of the Earth, was just being finished.
这位名为格雷格‧劳克林的教授称计算时所涉及的参数包括天体的年代、大小、温度、品质等多项重要因素,结果发现地球是所有天体中最“贵”的。
Professor Greg Laughlin came up with the figure by calculating the sum of the planet's age, size, temperature, mass and other vital statistics – and Earth came out as the most expensive.
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