Talk:Episode 78 - Welcome Perfect Mother!/@comment-30495680-20171024134903/@comment-30495680-20171024154412

1. Popularity reason? Maybe. It's discovered in 1930 and classified as planet until 2006

2. No, pluto (since 2006 - now) classified as dwarf planet in kuiper belt. What they found in 2015 is Hypothetical 'Planet X'. Because it can't be seen right now, and scientist only could predict this planet exist based on unique orbits of objects discovered in the Kuiper Belt.

So, Lily's SPR should be called 'Planet X' SPR (Well, that's weird). But the problem is this show made kids think that pluto is the part of out solar system (specially in this episode).