# Is the majority of Earth not unique?

Realize that comparing planets is hard, but is Earth really that unique?

More to the point, if everything say 20-km below sea-level up into the exosphere disappeared (and the moon too) - what would be left to differentiate Earth from other planets?

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Special is such a loaded term, unique might be preferable. –  Siv May 4 '14 at 9:38
I would prefer if we would stick to metric units. Also you accepted the first answer given only one hour after you asked. For a broad question like this, I would at least leave it open a few days. You are effectively silencing a whole set of different opinions a broad question like this could have attracted. –  tobias47n9e May 4 '14 at 18:29
@Spießbürger: (1) Switched it to metric units. (2) Post a better answer, and I'll select it, otherwise, I don't see the point in speculating that better answers might have been posted if I had waited to select an answer; the answer selected can always be changed. –  blunders May 4 '14 at 18:38