But if you could monitor the whole night sky, you'd see a type Ia supernova every few seconds.

但是如果我们监测全天，那么我们每几秒钟就可以看到一次Ia型超新星。

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Beginning with the letter "q", which Lisa saw when glancing to the sky in a bar, she tried to take photos of all the letters of the alphabet and put them into a book called Type the Sky.

据了解，丽萨在酒吧里仰望天空时偶尔看到一个“q”的图案，自此开始，她开始尝试拍摄所有字母图案，并将他们收录进一本名为《打印天空》的书中。

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The colors a sky-watcher sees depends on what type of gas is being hit and how high it is.

观察者们看到的颜色取决于被撞击的大气的种类和高度。

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The trailer-mounted radar is a "phased array" type - it scans the sky with a narrow beam which flicks between thousands of locations each second.

BBC: Fact file: Patriot missile defence

The Federal Air Marshal Service officially began in 1968 as the Federal Aviation Administration's Sky Marshal Program, and in the 1970s, extortion-type hijackings in the Middle East led to the deployment of some air marshals overseas.

CNN: STORY HIGHLIGHTS

The 14-year-olds also quizzed a number of journalists about their jobs, including the BBC's Dan Roan, BBC Radio 5 live's Ian Dennis and Sky Sports' Nick Collins, and got tips on what type of questions to ask.

BBC: School Report: John Terry looks to inspire new generation