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Nasa's Spirit rover signs off on Mars

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  • View of Mars by Nasa's Spirit Rover

    View of Mars by Nasa's Spirit Rover

    On Wednesday, Nasa finally pulled the plug on the Mars Spirit rover. The six-wheeled robot landed on the red planet on 3 January, 2004 and was originally expected to last about three months.

    Pictured above is one of the first images sent back to Earth by Spirit a day after it landed, with its airbags visible.

    See more space photos on ZDNet UK.

    Photo by: Nasa

    Caption by: Staff

  • Mars 'dust devil'

    Mars 'dust devil'

    One of the more interesting phenomenoms encountered on Mars by Spirit was the existance of mini dust storms called "dust devils". Here is a series of images of one dust devil captured in 2007.

    See more space photos on ZDNet UK.

    Photo by: Nasa

    Caption by: Staff

  • Bedrock on Mars

    Bedrock on Mars

    Bedrock shown in this image from 2004 reveals a complex geological history. Some of the rocks show signs of water erosion.

    See more space photos on ZDNet UK.

    Photo by: Nasa

    Caption by: Staff

  • Mars landscape

    Mars landscape

    In 2005, Spirit sent back this image of an area that contained sulfur and possibly a trace of water. It's most likely a volcanic deposit formed around gas vents.

    See more space photos on ZDNet UK.

    Photo by: Nasa

    Caption by: Staff

  • Nasa engineers work on Spirit replica

    Nasa engineers work on Spirit replica

    A few months after it landed, Spirit's left front tyre began showing a problem by using much more energy than the others.

    Here, Jet Propulsion Laboratory (JPL) engineers Eric Aguilar (left) and Joe Melko work in a sandbox to find a way around the problem. The wheel eventually died in 2006 but Nasa scientists were able to keep the rover rolling on five wheels by driving it backwards and devising easier ways to turn.

    See more space photos on ZDNet UK.

    Photo by: Nasa

    Caption by: Staff

  • Patch of silica on Mars

    Patch of silica on Mars

    On a positive note, the dead wheel dug up Martian soil that in turn led to Spirit's most impressive discovery — a patch of nearly pure silica. This was most likely caused by hot springs or steam vents.

    See more space photos on ZDNet UK.

    Photo by: Nasa

    Caption by: Staff

  • Rocks on Mars

    Rocks on Mars

    Five years after this image was taken by Spirit in 2005, Nasa scientists concluded that this area showed a past that was wet and non-acidic and could potentially sustain life as we know it.

    The rocks were identified as magnesium iron carbonate with a concentration of carbonate 10 times that ever seen on Mars. According to the space agency, carbonates originate in wet, near-neutral conditions, but dissolve in acid.

    See more space photos on ZDNet UK.

    Photo by: Nasa

    Caption by: Staff

  • View of Mars by Nasa's Spirit Rover

    View of Mars by Nasa's Spirit Rover

    This artist's impression shows what Spirit would look like on Mars. Nasa, meanwhile, has compiled an affectionate Curriculum Vitae of the Spirit rover.

    The Mars Opportunity rover, which landed on 25 January, 2004, continues to roam the surface of the red planet. 

    For more on this ZDNet UK-selected story, see What rover Spirit discovered on Mars (photos) on ZDNet.com.

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    Photo by: Nasa

    Caption by: Staff

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The space agency has finally given up hope on its Spirit rover, which landed on the red planet in 2004 and went on to make numerous significant scientific discoveries

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View of Mars by Nasa's Spirit Rover

On Wednesday, Nasa finally pulled the plug on the Mars Spirit rover. The six-wheeled robot landed on the red planet on 3 January, 2004 and was originally expected to last about three months.

Pictured above is one of the first images sent back to Earth by Spirit a day after it landed, with its airbags visible.

See more space photos on ZDNet UK.

Caption by: Staff

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