2006
The longest year on any planet that circles around our sun is on Pluto, which one year on Pluto roughly is 248 Earth years. <><><><><> Since Pluto is no longer considered to be a planet, the role of longest year falls to Neptune, with 168.4 years.
That depends on who you ask. Pluto technically has the longest year; each Plutonian year is equal to 247.7 Earth years. However, some scientists no longer consider Pluto to be a planet, and call it a "dwarf planet" instead. Since this decision was not actually binding, many people (including scientists) still consider Pluto a planet. If Pluto isn't actually a planet, then Neptune is the planet with the longest year (164.79 Earth years)
Pluto.
The thinking today is that the planet Pluto is no longer a planet, but is now considered a dwarf, from the year 2006.
2006
2008
The dwarf planet Pluto was discovered in the year 1930. It was discovered by Clyde Tombaugh and is the largest object found in the Kuiper belt.
The dwarf planet Pluto is the planet with a year 248 earth years long.
Pluto the 10th planet was discovered
2006
2006
Originally, he was named Rover. About a year after the naming of the former planet, they decided to switch the name to Pluto.