Comment on The Orbit of Planet NineparentComments−dragonwriter5yIn Cartoons (and in science), wasn't this called Planet X and in other hypothesis 'Nemesis'?Nemesis is a hypothetical star, not Planet 9/X, explaining different phenomena; it would be farther out.But, yes, Planet 9 is more recent name for the same hypothetical object as Planet X:https://solarsystem.nasa.gov/planets/hypothetical-planet-x/i...
Comments
Nemesis is a hypothetical star, not Planet 9/X, explaining different phenomena; it would be farther out.
But, yes, Planet 9 is more recent name for the same hypothetical object as Planet X:
https://solarsystem.nasa.gov/planets/hypothetical-planet-x/i...