The plight of a has-been planet

It's kind of Goofy, but it's true.
In spite of what we thought we knew,
ol' Pluto isn't worth his bark
way out there deep in space.

This is no Mickey Mouse-ish ruling.
All those textbooks from our schooling
have been rendered out-of-date.
The dog has been dethroned.

The tally proves he's no Survivor.
Pluto's torch has lost its fire.
The tribe has spoken and the pup's
been voted off for good.

So as you stargaze late at night,
remember "facts" aren't always right.
When science dines on just desserts,
sometimes it's humble pie.