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Tuesday, 11 February, 2003, 11:13 GMT
In pictures: Mars rovers on display
The US space agency Nasa has unveiled the two unmanned rovers it is sending to Mars this year to scour the planet for evidence of water and life.

Engineer finishes the assembly of one of two Mars rovers inside a clean room at the Spacecraft Assembly Facility in Pasadena, California
The rovers, which run on six wheels, are about the size of a small car

Simulated image of Nasa Rover on Mars
They will be used to travel further across the dusty landscape than any previous craft

Engineer stands next to a nearly fully-assembled Mars Exploration rover
With their sophisticated instruments, they will search for evidence of water

NASA scientists and engineers work on a portion of a scientific instrument assembly
The rovers - to be launched on separate rockets in May and June - cost more than $150m each to build

The round device will carry the rover into space, mounted inside a 12-sided support frame
The devices are identical, but will land in different regions of the Red Planet

Mars
After a seven-month journey, the rovers will parachute down to the planet's surface

Beagle 2
They are due on Mars just days after a British probe, Beagle 2, touches down
See also:

13 Dec 02 | Science/Nature
25 Dec 02 | Science/Nature
03 Dec 02 | Technology
09 Dec 02 | Science/Nature
23 Aug 02 | Science/Nature
10 Aug 00 | Science/Nature
23 Jun 00 | Science/Nature
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