neptune
Neptune is the eighth planet. Pluto, formerly the ninth planet, is no longer considered a planet.
Pluto has been recategorised as a dwarf planet. Until its change in status it was considered to be the ninth planet from the sun. Though, on occasion, its orbit brought it closer than to the sun than Neptune, the eighth planet.
Yes, Neptune is the eighth planet, and the farthest from the Sun. Back when Pluto was considered a planet, Neptune became the ninth planet for 20 years of Pluto's orbit as Pluto is closer to the Sun than Neptune for part of its orbit.
Neptune
The outermost planet in our solar system, Neptune, is often referred to as the eighth planet. When Pluto was considered a planet (prior to 2006) during its orbit it would cross inside the orbit of Neptune making the latter the outermost planet.
One ninth plus One eighth is 17/72, or seventeen seventy-seconds
No, Pluto was the ninth planet, but now, there is no ninth planet in this Solar System, since Pluto got turned into a dwarf planet. Your anus is a planet.
Pluto was discovered in 1930 by American astronomer Clyde Tombaugh. It was considered the ninth planet in the solar system until 2006, when the International Astronomical Union reclassified it as a dwarf planet.
1/72
5
No, there won't even be an eighth.
=27/9