在天文时间表上这实际上是相当戏剧性的变化。
That's actually a pretty dramatic change on astronomical time scales.
空间和时间，这听起来，像不像天文课程上学的东西？
一位天文家说，大师，时间是怎样的呢？
天文学家们知道宇宙正在膨胀这个事实已经有一段时间。
Astronomers have known for some time that the universe is expanding.
为此我曾立志当建筑家和天文学家，因为他们不会受到时间的束缚。
I had aspired to architect and astronomer, because they are free from the time.
天文钟已经调整到正确时间。
但是天文学家说他们尝试了一次回到过去的时间之旅。
But astronomers say they've done a little traveling into the past.
实际上，一个典型的天文学家把他的大部分时间都用来分析数据了。
In fact, a typical astronomer spend most his or her time analyzing data.
实际上，一个典型的天文学家把他的大部分时间都用来分析数据了。
In fact, a typical astronomer spend most his or her time analyzing data.
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