1. How long did it take to build the MER rovers?

2. How did the rovers get their names?

3. Are Spirit and Opportunity exactly the same in every way?

4. How long have the MER rovers been on Mars?

5. How long do mission scientists expect the rovers to last? Do the designers have an explanation for why they have lasted so much longer than expected?

6. Where are the rovers now? Besides their landing sites, where else have they explored?

7. Where are the rovers going next? Any plans to explore Olympus Mons?

8. What do the rovers do at night?

9. Are there temperatures that are too cold for the rovers? What are their temperature limits?

10. Besides Martian dust, what other factors might harm the rovers? Are the rovers suscepltible to rust?

11. Do the rovers have any self-repairing capabilities?

12. Is there a life-span expectancy for the RAT? Will the abrasion tool eventually wear out?
13. How independant are the rovers?
14. How do the rovers aviod cliffs? Can their navigation systems recognize cliffs and depressions or does NASA have to steer them clear?
15. What's the longest time that it has taken to send a rover a command?

16. How do the rovers know what to look at and study? Can they determine whether a rock or outcrop is interesting on their own or does NASA have to tell them?

17. How many pictures do the rover take (on average) per month? How many have been taken over the course of the mission?

18. What are the tires made of? Are they rubber?

19. What are the air-bags made of? Why don't they rip apart on the sharp Martian rocks?
20. How big were the parachutes (diameter) that were used to slow the rovers as they fell through the Martian atmosphere? What were the chutes made of?
21. If the mission designers could go back and make one change or modification, how would they choose to improve the rovers now that they have seen their success on Mars?
22. Have we sent any other rovers to Mars in the past? What were the missions of those rovers and how are the MER rovers different?
23. Are we planning on sending more rovers to Mars? When?

Are there any plans to send a mission to Mars that could return rock samples back to Earth? 

Are the rovers equipped with a video camera?

How fast can the rovers travel?

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