for two reasons:
Pluto
pluto
Pluto
Actually, Pluto is definitely not the last planet in the solar system. Pluto is the tenth planet, out of 18 planets and two protoplanets, and is binary, partnered with Charon. It is preceded by Orcus, and proceeded by Haumea.For a complete list of common objects in the solar system, see related links.
Neptune or maybe Pluto, although it's considered a dwarf so not an official planet anymore.
Pluto is the tenth planet in our solar system also the last!
Pluto, it is now a dwarf planet or planetoid.
it's because that they were asteroids that was bigger then Pluto so it was hard to find out which is Pluto and which are the asteroids
smallest planet. (pluto is not a planet anymore)
Pluto is not the last planet technically. Now it is a dwarf planet as it became to small to be considered a planet. Pluto is not the last planet. It is called the last planet as it is the furthest away planet that orbits our sun. There are many other planets further away from us than Pluto.
Neptune, Pluto has lost its status as a planet. Since then, many dwarf planets have been discovered beyond Pluto.
Mercury is the closest to the sun. Pluto is the very last planet in our solar system so that's what makes it the coldest planet.