Yup. They did.
Astronomers using the Hubble Space Telescope have discovered a fourth moon orbiting the icy dwarf planet Pluto. The tiny, new satellite -- temporarily designated P4 -- popped up in a Hubble survey searching for rings around the dwarf planet. Science News
Back when men were men, women were women, and dragons still roamed beyond the furthest seas, there were only six planets.
Astronomers discovered Uranus in 1781, leading to an increase by an order of magnitude in schoolboy jokes. (Hell, later astronomers even discovered rings around Uranus -- yuck, yuck, yuck, and I even know one of the astronomers who discovered themm, James Elliot).
Neptune got pinned down in 1846, and, lesson learned, they named it so that no one could make really lame jokes about body parts.
Then Pluto, mighty Pluto, God of the Netherworld and Ruler of the Dead, was discovered by Clyde Tombaugh, an American, in 1930. I even visited the observatory and saw what was probably a reproduction of the photo plates leading to the discovery. In other words, I WAS THERE (sort of). AND THEN THEY WENT AND BANISHED THE POOR THING.
It's hard. Hard I tell you. It's like being told there's no Santa Claus and no tooth fairy (you didn't hear that from me, btw...) It's like discovering that the Emperor of Ice Cream is only a poem.
And then, AFTER THEY BANISHED IT, they tell us it's got another child moon. Or is that an ex-moon?
WHY DON'T THEY JUST LEAVE POOR PLUTO ALONE????