Has Opportunity's bounce started to erode?
It looks like
Opportunity bounce marks are already being weathered. They don’t seem as sharp, and I think they have gotten darker.
While I am enjoying Spirit and Opportunities exploration of Mars, I have to pause and think of my mentor, who got me interested in Astronomy when I was 12 years old. Thank you Carl Sagan. I wish you could see these discoveries on Mars, a planet I know you had a deep love for.