"Neptune" was discovered on September 23, 1846.
The planet Neptune.
uranus
Not since 1846, no. Everything discovered in the solar system since then is considered to be at best a dwarf planet.
The planet Neptune was discovered in 1846.
Pluto
1846
Neptune was discovered on September 23rd 1846, through mathematical prediction.
Sept 23, 1846
on may 13 1846
Neptune
Neptune, the furthest planet from our sun.
people hypothesized that the gravity of an unseen planet was affecting Uranus orbit. by 1846, mathematical in England and France had calculated the orbit of this unseen planet. shortly thereafter an observer saw and unknown object in the predicted area of the sky. It was Neptune