Earth is larger than Mercury: 12,742 km vs 4,879 km. The difference is 7,863 km, so Earth is about 2.6 times the value of Mercury.
| Item | Value | Position in ranked list |
|---|---|---|
| Mercury | 4,879 km | 1 of 8 |
| Earth | 12,742 km | 4 of 8 |
Values are approximate and rounded. This comparison comes from the list "planets by diameter, smallest first" (8 items, position 1 is first in that order).
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