The Discovery of the Planet Neptune
Created September 30, 1997
The planet Uranus did not exactly follow the
orbit predicted by Newton's Laws.
A more distant yet-to-be-discovered
planet was perturbing the motion of Uranus
- Alternatively, Newton's Laws could be wrong.
Application of Newton's Laws predicted that the
new planet should be found at a particular location in the sky.
A new planet was found at the predicted
location on the first night of the search! The new planet was named