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(1)But scientists have discovered many other galaxies in the universe. They are a long way away and their light has travelled for many years to reach us. It is hard to understand how large the universe is.的翻译

解题思路： 先把生词解决掉，再弄明白时态，短语就好翻译了。
解题过程：
但是科学家们在宇宙已经发现了许多其他的银河系。他们离我们很远，他们的光已经传播到我们这儿许多年。真难理解宇宙有多大。
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最终答案：略