New evidence suggests a ninth planet lurking at the …
The Dwarf Planet Pluto - Universe Today
From its time of discovery in 1930 to 2006 it was consideredto be the ninth planet in the solar system, but because additionalobjects have been discovered including which is 27% more massive, the IAU reclassified Pluto and the otherobjects as dwarf planets.
10 Amazing Facts About The New Ninth Planet - Listverse
Pluto is usually farther from the than any of the eight planets;however, due to the eccentricity of its orbit, it is closer than for 20 years out of its 249 year orbit.
Dwarf Planet Pluto - Solar System
In 2006, the International Astronomical Union (IAU) officially created a definition of what makes a planet; Pluto did not meet all the criteria. Pluto was then downgraded from a "planet" to a "dwarf planet."
Why Pluto is No Longer a Planet - Universe Today
Once discovered, Planet X needed a name. Everyone had an opinion. However, the name Pluto was chosen on March 24, 1930 after 11-year-old Venetia Burney in Oxford, England suggested the name "Pluto." The name denotes both the assumed unfavorable surface conditions (as Pluto was the Roman god of the underworld) and also honors Percival Lowell, as Lowell's initials make up the first two letters of the planet's name.
Pluto was first discovered in 1930 by Clyde W
How far out there? Consider that it takes Neptune 165 years to orbit the sun. Based on the calculations of where Planet Nine would need to be to affect the solar system in this way, it is likely to have an orbit of 50,000 years and live far beyond the Kuiper Belt, the area where Pluto resides. put together a video to demonstrate how far it's going to be.