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Back to Earth 3

Episode 6 of 6

Brian, Dara and their guests return for an extra half hour of chat, debate and audience participation celebrating all things astronomical.

29 minutes

Last on

Thu 10 Jan 2013 21:00

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How do telescopes work?

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 slideshow

Astro audio slideshow
Astronomer Mark Thompson handpicks his favourite space pictures from the Stargazing Live Flickr group.

Watch on BBC Science

Follow @BBCStargazing

Follow @BBCStargazing
News, event details and behind-the-scene photos from the Stargazing LIVE production team. 

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Role Contributor
Presenter Brian Cox
Presenter Dara O Briain
Series Editor Alan Holland
Executive Producer Helen Thomas


  • Thu 10 Jan 2013 21:00

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