Pluto is not a planet; get over it!

Eighty years ago today "Pluto" was discovered and classed as the ninth planet of the Solar System.
In 2006 the "International Astronomical Union", the only official body which can classify and name celestial bodies, demoted Pluto and reduced us to eight planets - but not before making idiots of themselves by initially including other objects as planets and boosting the number temporarily to twelve! Pluto has the consolation prize of being classed as a "dwarf planet", a completely spurious concept in my opinion! The only thing "dwarf planets" have in common is that they are roughly spherical, any body over 300 miles in diameter will have enough gravity to render itself spherical.
When it was first discovered Pluto was thought to be several times the size of Earth and easily fell within the then accepted definition of a planet. But over the subsequent years its size has been revised down to about Earth's size, then the size of our Moon and ever down...... one wag said that if Pluto continued to lose mass at this rate it would cease to exist by the centenary of its discovery!
One reason for the apparent loss of mass was the discovery in 1978 that "Pluto" was actually two objects orbitting each other - Pluto and Charon. Since then many more objects have been identified in the outer reaches of the Solar System which have caused astronomers to revise how we look at our celestial neighbours. In fact there are thought to be countless numbers of such icey bodies at the outer margins of the Solar System and that these are the source of comets, which are periodically sent our way by the influence of the gas planets.
When one plots such things as size, orbital properties, composition etc the Solar System easily breaks down into four quite distinct groups (five if you include the Sun); the 'Rocky Planets' (Mercury, Venus, Earth & Mars), then the asteroids, followed by the 'Gas Planets' (Jupiter. Saturn, Uranus & Neptune) and in the outer reaches 'Kuiper Belt Objects' - of which Pluto and Charon are an example.... and not even the largest!
Pluto is not the outermost planet, it is among the innermost KBOs. Sorry but there you have it!