These are holes in the aluminum of the left front wheel on the rover, after just slightly less than three miles of travel over the rocky Martian surfaces. Sharp rocks have punctured the aluminum wheel.
Today's Question Everything is: "Why weren't these made stronger for a car-sized one-ton rover?" We ought to get more than three miles out of a set of
wheels, especially considering the expense and the remoteness of this project.
It's not like we can call triple-A for a tire replacement here. Were they aware that the success of the whole project depends on these wheels doing their job?
One wonders.
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