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Once theyve caught the light of a dying star with their state of our telescopes. The detective work can begin. We collect that light and we analyze it in great detail in order to determine whats going on, whats the chemical makeup of the star, whats
发表于:2019-01-22 / 阅读(41) / 评论(0)
自然百科2011年
And with his colleagues, he did the calculations to prove it. The key was the conditions created in the final stages about massive stars fighting against its gravity. These stars are so massive and hot that they can go through a whole series of nucle
发表于:2019-01-23 / 阅读(59) / 评论(0)
探索与发现2015年
Avocado 牛油果 In addition to its flavorful taste and rich and creamy texture, this fruit (yep, it is indeed a fruit!) is loaded with antioxidants and can help you lower your bad cholesterol. Whether you eat it in a salad, spread on toast, or even
发表于:2019-02-01 / 阅读(61) / 评论(0)
实用英语