| “ | Sun Sun Sun! | ” |
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 Mercuryball |
Freddie Mercuryball is a rock singer and keyboardist a failed car company an element of the periodic table the second-smallest and innermost planet in the Solar System. It is of best friends with 
Sunball, being the closest, though Sunball burns it badly. One side of it is about 420°C, while the other side is -150°C. It is a 3:2 spin-orbit resonance with Sunball.
Composition
Mercuryball is a rocky planetball with an unusually large core. Up to 55% of Mercuryball's volume is dominated by its 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 Nineball. It takes about ~87.969 Earth days to complete one full orbit. It also rotates slowly. Because of its high eccentricity and slow rotation, there is a rather interesting effect that occurs: as Sunball climbs into the sky, it seems to stop, reverse its course, the reverse again before finally setting in the West.
Relationships
Venusball: My sibling who is shinier than me
Sunball: My parent who burns me super badly
Earthball: My sibling who tried to kill me and stole my mantle, so I have a trick up my sleeve for revenge...
Marsball: My sibling who's colder than me.
Plutoball: My sibling I thought didn't exist it doesn'tI want it to be a planet again, so I don't have to be the smallest.
Jupiterball: My sibling who prevented me from murdering Earthball. You will pay. Oh, what's that? You wanna help me murder Earthball again? Fantastic!
Gallery
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The Solar System 1 - Mercury
A video
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By u/whybepurple
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