According to gravity, a planet shouldn't split apart and separate at all.
"Real life physics don't apply in BIONICLE, unless scientists discovered Protodermis yesterday and I wasn't told about it."
— Greg Farshtey
Maybe the EO planet was on the opposite side of the orbit as Bara Magna, and Iggy/Mats was launched out into orbit and eventually came around and hit Bara.
It's been a while, so even the slightest amount of drift is going to eventually take it faaar away.
Also having an enormous robot crash into it from orbit may have caused it to speed up.
Well, the blades themselves are solidly connected, but the housing for them moves up and down and side to side so it can steer right.
Which is really clever, IMO.
Screenshotted it from the Cendox Zoom window on S@H.
Oh.
I see what LEGO did there.
I've been wondering how that attaches, and I've been thinking that it must attach so that it doesn't move.
But after seeing the high-def images I realized that it's a lot cooler than that. :3
Thought so.
Nubs.
And with that, 10 colors doesn't sound that bad. Vorox has 8 colors, 9 if you count the armor as 2 colors. Tarix (>__>) has 7, 8 counting the blades as 2 colors (and it would be more if the pins didn't match some of his blue). Malum has 8 colors. Gresh has 7. Skrall has 7. Strakk has 10 colors. None of these include the Thornax.
Yeah, it's cool how they immediately release new parts in a wide variety of colors as well. The hands have a wider range of colors than the Y-joints had for years.