| “ | Sun Sun Sun! | ” |
—
 Mercuryball |
Freddie Mercuryball is a rock singer and keyboardist a failed car company the smallest and innermost planet in the Solar System. It is of best friends with 
Sunball, being the closest, though Sunball burns him badly. One side of him is about 420°C, while the other side is -150°C. He is gravitationally locked to the Sunball in a 3:2 spin-orbit resonance.
Composition
Mercuryball is a rocky planet with an unusually large core. Up to 55% of Mercuryball's volume is dominated by it's core, which has an abnormally large iron content. Scientists from 
Earthball believe that most of Mercuryball's crust and mantle was once stripped away by a large collision billions of years ago, thus resulting in his large metallic core.
Orbit/Rotation
Mercuryball follows a highly eccentric orbit, with an eccentricity of ~0.21, making it the most eccentric of all major planets, with the exception of Planet Nine. It takes about ~87.969 Earth Days to complete one full orbit. It also rotates slowly, being gravitationally locked to the Sun. Because of his high eccentricity and slow rotation, there is a rather interesting effect that occurs: as the Sun climbs into the sky, it seems to stop, reverse its course, the reverse again before finally setting in the West.
Relationships
Venusball: My sister who is shinier than me
Sunball: My father
Earthball: My brother who tried to kill me, so I have a trick up my sleeve for revenge...
Marsball: My brother who is colder than me.
Plutoball: My brother I thought didn't exist he doesn'tI want him to be a planet again, so I don't have to be the smallest.
Jupiterball: My brother who prevented me from murdering Earthball. You will pay.
Gallery
- The Solar System 1 - Mercury
A video
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By u/whybepurple
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