How was Neptune first discovered by astronomers? Mathematical models to create a complete solar system; observing it through a telescope; strange irregularities in the orbit of Pluto; or the wobble in Uranus’ orbit, meaning it was being pulled by larger object.

Answer 1

Neptune was first discovered due to the wobble in Uranus’ orbit, which indicated that it was being influenced by the gravitational pull of a larger, unseen object. Astronomers John Couch Adams in England and Urbain Le Verrier in France independently calculated the position of this new planet based on the perturbations observed in Uranus' orbit. Their predictions led to the observation of Neptune through a telescope on September 23, 1846. Thus, the correct answer is the wobble in Uranus’ orbit, meaning it was being pulled by a larger object.