| — Work as Google Earth client overlays• National Space Science Data Center | — information about Mars and how to observe it |
|---|---|
| International Earth Rotation and Reference Systems Service IERS | from the NASA History Office |
Britt, Robert March 14, 2003.
8| Explanatory Supplement to the Astronomical Almanac | International Earth Rotation and Reference Systems Service IERS |
|---|---|
| The image to the left shows a comparison between Mars and , a in the , as seen from the pole, while the image to the right is as seen from the ascending node | The segments of orbits below the ecliptic are plotted in darker colors |
— Comparisons of terrains between Earth and Mars• — World's search engine that supports , , and other applications.
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