The Hubble telescope was launched into space by NASA on April 20,1990 at a cost of over a
billion dollars. Right from the start there was trouble with the Hubble. The pictures it s
ent us were very d...
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可能对按键不够熟悉，或者对输入法不够熟练所导致，不要急慢慢来，先打对把准确率提高，然后逐渐的加快速度，最后才能打准打快。
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| Inspirational quotes: 作为一个科学家来说，我的成功……最主要的是：爱科学作者：在长期思索任何问题上的无限耐心作者：在观察和搜集事实上的勤勉作者：相当的发明能力和常识。 ——达尔文 | |||||||
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