Pluto, the planet that wasn't

This is a tale of how

humans first destroyed a planet

and yet changed nothing at all.
Shuffle the Deck of definitions

Changed the ace of tradition

With a jack of a decision.
Many, a many a mile from Earth,

Older than our ancestors' births,

The twins cavort with ceasless mirth.
Like siblings in an unlit park,

Orbiting solar in eliptic arc;

Comrades together will fear no dark.
They danced inside the sea god's line,

Without trepidation advanced over the Rhine;

While astronomer's council makes water from wine.
One a great philosopher,

The other a common girl:

No longer a planet, or so we're told

Yet still through heavens they whirl.