planetary mass 中文意思是什麼
planetary mass
解釋
行星質量-
Failing this mankind would stand at the bar of abstract justice ( for there may be no posterity to judge ) as the mass murderer of life generally, his own included, and mass disrupter of the intricate planetary development that made life in its present glory possible in the first place
人類如果做不到這一點，那就會成為大規模荼毒生靈（包括人類自身）的凶殺，成為大規模破壞地球錯綜復雜的進化（是這種進化最終形成了目前這種生命繁榮的景象）的罪魁禍首而受到抽象意義上的法庭的審判（因為到那時可能已經沒有子孫後代來審判他了） 。 -
When it dies ( by swelling to become a red giant, a planetary nebula and finally a white dwarf ), it will be much hotter than other, older white dwarfs of similar mass
當它（膨脹成紅巨星、行星狀星雲並最後變成白矮星）死亡時，它的溫度將比其他質量相近的年老白矮星，要高上許多。 -
Because the forces that are supposed to drive off mass from dying stars are spherically symmetrical, astronomers before the 1980s thought of planetary nebulae as expanding spherical bubbles [ see “ planetary nebulae, ” by martha and william liller ; scientific american, april 1963 ]
由於原本認為，從垂死恆星表面將質量載運出來的作用力具有球狀對稱性， 1980年代以前的天文學家，把行星狀星雲想像成膨脹的球形泡泡（請參見延伸閱讀1 ） 。 -
The bull ' s - eye patterns seen around planetary nebulae come as a surprise to astronomers because they had no expectation that episodes of mass loss at the end of stellar lives would repeat every 1, 500 years
這個牛眼樣的圖案出現在行星式星雲四周讓天文學家很吃驚，他們不可能期待1500年，在他們有生之年只能看到片斷。
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