How are all eight planets different?

Answer 1

All eight planets are identical, except for their mass, diameter, oblateness,

distance from the sun, orbital speed, rotation period, revolution period, orbital

eccentricity, presence or absence of atmosphere, composition of atmosphere,

depth of atmosphere, atmospheric pressure at the surface, presence or absence

of natural satellites, number of natural satellites, presence or absence of rings,

number of rings, surface temperature, composition of the solid body, magnetic

field, density, inclination of the rotation axis to the orbital plane, and inclination

of the orbital plane to the ecliptic. Aside from that, they're pretty much all the same.