| martian surface | 4.02 | First, Pathfinder must reach the martian surface. | ||
| martian atmosphere | 3.75 | The Martian atmosphere is thin, as Lowell had guessed, but not calm. | ||
| martian life | 2.30 | ...fanciful ideas about Martian life. | ||
| martian meteorite | 1.58 | But not all Martian meteorites may have been lifeless. | ||
| martian rock | 1.38 | The results will be the first determination of the composition of Martian rocks. | ||
| martian soil | 1.18 | Their goal is to find water ice in the Martian soil. | ||
| martian landscape | 0.72 | More recent observers swear they see a face in the Martian landscape. | ||
| martian climate | 0.66 | If so, the free water rapidly evaporates in the current Martian climate. | ||
| martian microbe | 0.66 | Martian microbes may have trouble surviving on Earth. | ||
| martian terrain | 0.53 | The oldest Martian terrain bears the scars of extensive cratering by meteors. | ||
| martian weather | 0.46 | Other data presented Tuesday included a Martian weather report. | ||
| martian plain | 0.33 | The Vikings are silent relics on Martian plains. | ||
| martian equator | 0.26 | The recent Global Surveyor snapshots capture layered sediments in low-lying regions around the Martian equator. | ||
| martian feature | 0.26 | Already, scientists and reporters are giving nicknames to the Martian features. | ||
| martian history | 0.26 | The spacecraft has given scientists their best look yet at Martian history. | ||
| martian invasion | 0.26 | Right -- and everyone believing in Martian invasions please step this way. | ||
| martian moon | 0.26 | This castle guards a Martian moon. | ||
| martian orbit | 0.26 | Four years ago, the Mars Observer went dead just three days before it was to enter Martian orbit. | ||
| martian sky | 0.26 | Ember, thumping down from the sunflower against the bitter chocolate of the Martian sky. |