Wikipedia: 1000000000km2

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Changed: 4c4

* 1,700 million km² -- Total solid surface area of the Solar system does this include any asteroids? There should be some size cutoff or we wind up trying to calculate the total surface area of dust grains

* 1,700 million km² -- Total solid surface area of the Solar system potentially (if remotely) suitable for human habitation[1]

To help compare sizes of different surface areas, we list here areas between 1000 million km² and 10,000 million km².

Areas smaller than 1000 million km²
1,700 million km² -- Total solid surface area of the Solar system potentially (if remotely) suitable for human habitation[1]
7,700 million km² -- Neptune
8,100 million km² -- Uranus
Areas larger than 10,000 million km²