What is the working lifespan of the rovers?
The main limiting factor in the rovers’ ability to continue functioning is how dust collects on the solar arrays, and reduces the amount of electricity that they can generate. The expected lifespan of the rovers was 90 sols (1 sol is a Martian day, or 24 hours and 40 minutes in Earth time). They have both so far exceeded expectations, and the team currently expects that they will be able to function well until September (more than 200 sols).
