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To: yefragetuwrabrumuy

whoops, I got distracted and didn’t finish that sentence — Mars has been continuously refaced, but hasn’t picked up much mass in the process.


13 posted on 09/18/2012 3:20:41 PM PDT by SunkenCiv (https://secure.freerepublic.com/donate/)
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To: SunkenCiv

I suspect that its lack of a magnetic field answers the question. It probably had lots of large impacts from comet bodies, that created a lot of atmospheric water that was relatively quickly whisked away by the solar wind.

For whatever reason, Earth probably got one or more big rocky iron bodies that contributed substantial mass.


14 posted on 09/18/2012 3:49:58 PM PDT by yefragetuwrabrumuy (DIY Bumper Sticker: "THREE TIMES,/ DEMOCRATS/ REJECTED GOD")
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