it is not considered as planet cause it is very small in size and is made of ice and rock and it does not exit life.
the only planet that scientists do not consider a planet is Pluto, (but they also found new planets in the asteroid belt.)Pluto
Pluto, but some consider that Pluto is not a planet anymore.
August 24, 2006 is the date when Pluto was consider no more a planet.
Since 2006, Pluto has been considered a dwarf planet.
2006
A VERY small planet.
Mercury, Mars and Pluto if you consider Pluto as a planet.
Ceres, Pluto, Haumea, Makemake and Eris.
Charon. It's more of a satellite than a planet, unless you want to consider Pluto/Charon as a double planet. That's a little awkward, since Pluto has been downgraded to a planetoid.
Because it is not big enough. It is classed as a dwarf planet.
Pluto. It is now considered a "Dwarf Planet", due to its tiny size and the fact that there are other bodies like Pluto in the outer Solar System.
No, not all astronomers consider Pluto a planet. Pluto was reclassified as a dwarf planet in 2006 by the International Astronomical Union, leading to debate among scientists about its classification. Some astronomers argue that Pluto does not meet all the criteria to be considered a full planet.