areo.info / MER / Opportunity / | Sol 4022 Sol 4021 Sol 4020 |
Sol 4021 local noon on Opportunity landing site was 2015-05-17 16:59 UTC on Earth. | last modified: 2016-01-31 21:49 UTC |
All Mars images derived from original data published by NASA and JPL on Marsrover Image Gallery and exploratorium.edu. |