As of tomorrow (1/25/14) The rover opportunity MER-B Will have been roaming around on the martian surface for a full 10 earth years.
An impressive feat for a 90 day mission. Thus to NASA, The team involved in the rover missions & mankind in general for having the ever presence urge to reach out into the far beyond and explore. I wish to say thank you and congratulations for this amazing feat.
Happy 10th rover, Here's to another 10. Keep on truckin you amazing little bugger.