Earth
12,742 kmEarth is the larger world.
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Mars & Earth
Googolstars
One spark. Infinite wonder.
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Two rocky worlds
Earth and Mars are rocky neighbours with seasons and polar ice. Their similar rotation periods hide very different worlds: a blue planet with oceans, and a cold desert beneath a thin atmosphere.
Mean diameter
Earth is the larger world.
53.2% of Earth’s diameter.
Mars has about half Earth’s diameter and 15% of its volume.
Googolstars
Mars & Earth
One spark. Infinite wonder.