Plutos wikipedia page seems to support this (under mass estimates). https://en.m.wikipedia.org/wiki/Pluto
Ps when its discovered, can the planet start with a P so the rhymes still work?
Observations of Neptune in the late 19th century led to a prediction that there was another planet, beyond Neptune, that was also affecting the orbit of Uranus. Pluto was discovered -- accidentally -- during the search for that predicted 9th planet.
It was later discovered that (a) Pluto isn't nearly massive enough to explain the observed perturbations, and (b) the observations were explained without the need for another planet when more accurate mass measurements were made.
(The hypothesized Planet Nine is too far away to have a significant effect on the orbits of Uranus and Neptune.)
How was Neptune predicted from observations of its own orbit? Am I not parsing this correctly?
My Very Educated Mother Just Served Us... Nothing!
Very unsatisfying. But my aged brain cant remember the others :(
Mein Vater erklärt mir jeden Sonntag unsere neun Planeten.
In case anyone is wondering what the new one actually is, the mom now serves nachos.