Wowsers! That's more than 80% of the way to the Earth's core, and isn't Mars smaller than the Earth? That must mean... It goes right through! Mathematical/logical discovery by Dean: Mars has a hole in it.
Ha ha, I meant four times as big (length, width and depth). Ha ha. Anyhow, here's one reference. Wikipedia is not the best, but I couldn't find a better geology site reference, and I'm feeling lazy:
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Coolness, yet just think. There's a "Grand Canyon" on Mars that's almost four times as deep as our Grand Canyon.
Wowsers! That's more than 80% of the way to the Earth's core, and isn't Mars smaller than the Earth? That must mean... It goes right through! Mathematical/logical discovery by Dean: Mars has a hole in it.
Ha ha, I meant four times as big (length, width and depth). Ha ha. Anyhow, here's one reference. Wikipedia is not the best, but I couldn't find a better geology site reference, and I'm feeling lazy:
http://en.wikipedia.org/wiki/Valles_Marineris
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