Why was the author surprised at Juan's question about the moon?

作者为什么对胡安关于月球的问题感到惊讶？

youdao

We still know little about the Moon although men have landed on it.

尽管人类已经登陆月球，但我们对月球仍然知之甚少。

youdao

Astronomers were glad to know that their suppositions about the moon were correct.

天文学家很高兴知道他们对于月球的假设是正确的。

youdao

It contained all the necessary information about the moon and stars that sailors would need to help them learn their longitude.

VOA: special.2010.07.14

And this is a very fast speed, of course, it's about 700 million miles per hour. So, one way to put that in perspective is to think about how long it takes for a light beam to get from earth to the moon. Does anyone have any guesses? Eight seconds, that sounds good.

当然这是一个非常快的速度，它大约是每小时7亿英里,为了更形象化，我们,看看光从地球到月球,需要多少时间，你们猜猜是多少？,8秒，猜的不错。

麻省理工公开课 - 化学原理课程节选

" The jester thought for a minute and said, "Well,they are all wise men, but have different ideas about the moon.

VOA: special.2009.03.28

That will provide a lot more information about the Moon and how it formed.

FORBES: NASA's GRAIL Mission Will Unlock Secrets Of The Moon's Interior

Of course in 2012 we would have been tweeting and blogging about the moon landing in real time.

FORBES: Neil Armstrong Dies; Two Takes On His 'Giant Leap For Mankind'

These maps will help to address some other long-standing questions about the moon.

ECONOMIST: Divining water