Check out the latest pic from Opportunity:
Opportunity and her twin (and stuck) rover Spirit mark their 7th year on Mars this week - not bad considering their original mission length was 90days!
We can see detail in the layers of the crater which acts like a time machine to look deeper into the history of the Red Planet.
I ALWAYS love the colored pics from Mars as the planet is so alien and beautiful.
See the Rover page at http://www.nasa.gov/mission_pages/mer/index.html
Sky Guy in VA