A few months after it landed, Spirit's left front tire began showing a problem by using much more energy than the others. Here, 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 it rolling on five wheels by driving it backwards and devising easier ways to turn.
What rover Spirit encountered on Mars (photos)
Image 6 of 19
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Mars should be landed on by humans.
Mars should be the next project for Space Exploration. Man needs to find out all it can.
Perhaps the question of " are there others besides us " will be one day answered.
Mars could lead in that answer.
Perhaps the question of " are there others besides us " will be one day answered.
Mars could lead in that answer.
Posted by fspence
26th May 2011