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Saturday, September 23, 2000



Plate Tectonics

A mountain range.
A mountain range.
Credit: Unknown
One distinguishing feature of Mars is that it has no measurable magnetic field. Earth's own magnetic field is due to its rather swift rotation swirling our liquid outer core and creating a dynamo. Since Mars rotates at a rate close to ours, the absence of a Martian magnetic field would seem to indicate that Mars is solid throughout.

- posted by Alex @ 18:26 EST