Some people say that Pluto has many features we normally associate with planets.
According to Nasa, Pluto is a “complex and mysterious world with mountains, valleys, plains, craters, and glaciers”.
Pluto also has five known moons – Charon, Styx, Nix, Kerberos and Hydra.
Scientists who want Pluto reclassified point towards the fact that the IAU’s description is outdated and needs to be changed as it is too narrow and doesn’t reflect how complex space objects really are.
In addition, a lot has been discovered about Pluto since it lost its planet status in 2006.
Nasa’s New Horizons mission – the only spacecraft to have explored Pluto up close – flew by the dwarf planet and its moons in 2015 and transformed our understanding of this distant object.
Before New Horizons, the best images of Pluto revealed nothing more than a few light and dark patches.
However, the spacecraft sent back many new pictures which showed Pluto in much more detail, revealing lots of scientific information about the dwarf planet.
And that’s why some scientists say that it needs to be looked at whether it should become a planet again.
