The planet Neptune was discovered in 1846.

Ever since then, astronomers have felt that there had to be another planet beyond the orbit of Neptune.

Everyone assumed they found it with the discovery of Pluto in 1930.

However, something still wasn't quite right.

90 years later, the mystery planet still hasn't been found,

but astronomers might be getting close.

Learn more about Planet 9,

sometimes called Planet X, on this episode of Everything Everywhere Daily. Book your ticket to happiness with Sun Express Airlines. Before we get too far into this discussion, let me address what many of you are probably

thinking didn't we already have a ninth planet

Pluto was a perfectly fine planet and then they demoted it shouldn't we be talking

about a tenth planet if you remember way back I previously did an

episode where I went through the entire Pluto Saga and the reasons behind its

demotion from Planet to Trans-Naptunian object. Pluto, ever since its discovery, has always been the odd planet out.

Its orbit, its mass, everything about it was different.

The problem with Pluto being a planet is that we began discovering a whole lot of things beyond the

orbit of Pluto which looked a lot more like Pluto than anything else. We went through

the same thing in the 19th century with Series. Series is the largest object in the asteroid belt and it was originally

considered a planet. However we then began finding a whole lot of other stuff in that

region which looked a lot more like series than anything else and it too was

demoted as a planet.

So for the purposes of this episode, Pluto is not the ninth planet.

If it were, we'd have to have at least 12 or 13 planets.

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