According to the speaker, what do people often think about astronomers?

Most people think of astronomers as people who spend their time in cold observatories peering through telescopes every night. In fact, a typical astronomer spends most of his/ her time analyzing data and may only be at the telescope a few weeks of the year. Some astronomers work on purely theoretical problems and never use a telescope at all. You might not know how rarely images are viewed directly through telescopes. The most common way to observe the skies is to photograph them.

One of the worst typhoons to hit China in several years has killed 63 people and injured more than 1,800 as it battered southeastern Zhejiang Province. Most of the casualties occurred when homes collapsed. Officials had evacuated 400,000 people to escape the typhoon that was forecast to be the worst since 1997 when a storm ripped into China, killing nearly 250 people and causing 19.8 billion yuan in economic losses.