When I was growing up, we HAD 9 planets. As far as I am concerned, we still do.
My
Very
Educated
Mother
Just
Served
Us
Nine
Pizza Pies
:)
I learned that they were called
Mercury
Venus
Earth
Mars
Jupiter
Saturn
Uranus
Neptune
Pluto
Who taught you those names? :-P
My mnemonic that was taught to me was
Man
Very
Early
Made
Jars
Stand
Up
Nearly
Perpendicular
From my high school days:
Miss
Vasquez
Eats
Many
Jelly
Sandwiches
Under
Nancy’s
Porch