Neptune-Discovery
Neptune was found when astronimers John Couch Adams
and Urbain Jean Joseph Leverrier calculated the position of a new planet which
they thought was altering the orbit of Uranus. When Neptune was first observed
by German astronimer Johann Gottfried Galle in 1846. Even after the discovery of
Neptune the orbits of Uranus and Neptune were still diferent from what
astronimers thought they should be. This led to the search for yet another
planet.
The astronimers were surprised when they discovered Pluto, as they were
expecting a planet much larger than the earth. But Pluto is only 3000km in
diameter, smaller than what was previously thought to be the smallest planet in
our solar system, Mercury. With the discovery of Pluto, both Uranus and Neptune
are following their predicted path.