Yes, There Are Only 8 Planets Instead of 9 Because There Used To Be Just 5.

Rhett Allain
8 min readFeb 21, 2022
Photo:Rhett Allain. Jupiter and Saturn in the sky.

Some people were super upset when it was decided that Pluto should not be called a planet. I mean, countless students had grown up memorizing the following sentence:

My Very Excellent Mother Just Served Us Nine Pizzas.

Of course, this is a mnemonic to help us remember the VERY IMPORTANT order of the planets in…

Rhett Allain

Physics faculty, science blogger of all things geek. Technical Consultant for CBS MacGyver and MythBusters. WIRED blogger.