Mercury is (now) the smallest planet in the solar system.
It has the most eccentricity and is super dense, like art students.
Venus has an atmosphere made of sulfur and carbon dioxide.
The rain bounces back and forth between the land and the clouds.
Earth has things like walruses and palm trees that have coconuts.
The diameter is forty-or-so-thousand kilometers, equatorially speaking.
Mars probably has martians that wear Roman helmets.
It is made out of rust and shines in the night, naked to the eye.
Jupiter is large and gassy and stormy and has its own adjective.
Its red spot is almost as old as Shakespeare’s sonnets.
Saturn could float in a really big bathtub if there was one.
Nine rings, made of light and sound, surround its bulging equatorial belly.
Uranus is dim and has a slow, plodding orbit, icy and cerebral.
Its axis is crooked; the poles live on the equator.
Neptune is named after the God of the Sea.
Though it has no ocean, it ebbs still, and looks blue and vast.
Pluto used to be a planet but then got dissed by science and math.
Sometimes it gets closer to the Sun than Neptune.