Reply To: Module 3 – Stars, Space and Aliens

[Frances McCarthy]

Síle,

did you realise that most of the Mars rovers have 6 wheels? Part of the reason is if one or two break, the rover can still keep moving.

One of the small rovers – Opportunity I think, had a problem with a wheel, so used to drive backwards part of the time. You can see this in the wheel tracks on the Martian sand.