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Episode 3

Episode 5 of 6

On the final night of their astronomical adventure, Brian and Dara discuss meteors, comets and asteroids and discover what they reveal about the origins of life on Earth.

On the final night of their astronomical adventure, Brian and Dara discuss meteors, comets and asteroids and reveal how studying them reveals information about the origins of life on Earth. Meanwhile, Liz Bonnin meets the NASA team tasked with tracking any space objects on a collision course with Earth. The results of the experiment carried out by the Stargazing viewers - to explore an uncharted area on the surface of Mars - are also revealed.

59 minutes

Clip

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. 

Follow @BBCStargazing on Twitter

Astronomy through social media

Astronomy through social media

Web producer Simon Mackie writes about life on location for the Stargazing web team, and how they use Twitter, Flickr, live web chats and citizen science to engage with the audience at home.

Credits

Role Contributor
Presenter Brian Cox
Presenter Dara O Briain
Reporter Liz Bonnin
Series Producer Alan Holland
Executive Producer Helen Thomas

Broadcasts

  • Thu 10 Jan 2013 20:00
  • Sat 12 Jan 2013 18:00

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