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How do telescopes work?
Do you know the differences between refractor, reflector and radio telescopes?
Find out about the principles behind each in this illustrated guide.
Astro audio slideshowAstronomer Mark Thompson handpicks his favourite space pictures from the Stargazing Live Flickr group.
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- Series Producer
- Alan Holland
- Brian Cox
- Dara O Briain
- Mark Thompson
- Liz Bonnin
- Executive Producer
- Helen Thomas