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Aliens

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Last broadcast on Wed, 1 Feb 2012, 23:00 on BBC HD (see all broadcasts).

Synopsis

Episode image for Aliens

Professor Brian Cox visits some of the most stunning locations on earth to describe how the laws of nature have carved natural wonders across the solar system.

Brian descends to the bottom of the Pacific in a submarine to witness the extraordinary life forms that survive in the cold, black waters. All life on Earth needs water so the search for aliens in the solar system has followed the search for water.

Soaring above the dramatic Scablands of the United States, Brian discovers how the same landscape has been found on Mars. And it was all carved out in a geological heartbeat by a monumental flood.

Armed with a gas mask, Brian enters a cave in Mexico where bacteria breathe toxic gas and leak concentrated acid. Yet relatives of these creatures could be surviving in newly-discovered caves on Mars.

But Brian's sixth wonder isn't a planet at all. Jupiter's moon Europa is a dazzling ball of ice etched with strange cracks. The patterns in the ice reveal that, far below, there is an ocean with more potentially life-giving water than all the oceans on Earth.

Of all the wonders of the solar system forged by the laws of nature, there is one that stands out. In the final episode of this series, Brian reveals the greatest wonder of them all.

Photo: Icefields

Brian Cox cuts a lonely figure as he walks across the bleak landscape of the icefields of Iceland.

Photo: Alvin

the submersible 'Alvin' is lowered into the the water ready to take Brian down to the depths of the Pacific.

Photo: Scablands

Brian and the team fly above the Scablands of Washington state USA, to take a closer look at the unusual landscape.

Photo: Returning from the deep

Brian emerges from the submersible after visiting the depths of the ocean.

Explore the Solar System

Watch video clips from classic BBC television programmes about the Solar System. The videos cover topics including the planets, moons and astronauts from series such as The Planets, The Sky at Night and Horizon.

Learn more about the Solar System with clips from the BBC Archive.

Credits

Series Producer
Danielle Peck
Presenter
Brian Cox
Director
Michael Lachmann
Executive Producer
Andrew Cohen

Broadcasts

  1. Sun 4 Apr 2010
    21:00
  2. Sun 4 Apr 2010
    21:00
  3. Tue 6 Apr 2010
    19:00
  4. Wed 7 Apr 2010
    00:10
  5. Sat 8 May 2010
    19:00
  6. Sun 9 May 2010
    02:00
  7. Thu 3 Jun 2010
    00:20
  8. Tue 19 Oct 2010
    23:20
  9. Thu 25 Nov 2010
    19:00
  10. Fri 26 Nov 2010
    00:30
  11. Sat 27 Nov 2010
    19:15
  12. Thu 14 Apr 2011
    00:20
  13. Thu 14 Apr 2011
    00:30
  14. Wed 1 Feb 2012
    23:00

More details

In this series

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Duration

60 minutes

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