What have we learnt from Mars in a year?

Last updated at 07:36
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David Shukman takes a look at discoveries on Mars

It's a year since the most high-tech space robot ever invented landed on Mars.

Curiosity Rover has spent the last 12 months collecting information from the red planet.

The first discovery the rover made was that water had previously flowed on the surface of Mars.

It then drilled down to find some clay, which Nasa say means there could have been life there too.