Talk:North Polar Basin (Mars)
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|WikiProject Solar System / Mars||(Rated Stub-class, Mid-importance)|
- The North Polar Basin, or Borealis basin, is a large basin in the northern hemisphere of Mars that covers 40% of the planet.
Martian dichotomy says the lowlands cover one-third of Mars. Does the polar basin include all of the lowlands (and then some)? Other theories see two or three basins in the north.