And yet, at the same time, Pearl has a Pink Diamond on her spacesuit - suggesting she was part of her court.

I think Historical Friction puts it pretty well - they always believed they were too dangerous to be around these people, as much as they'd like to protect them. They've definitely watched and learne about them before (pretty sure Rose wasn't talking literally about Greg and Sour Cream, but rather that the tiny babies…

She probably wasn't inside the Earth. Mask Island clearly shook like crazy on top of the water, which suggests it's actually somehow floating - and so when Jasper fell into the crack that formed, she just… went straight into the ocean. Granted, that raises the question of how did the island crack, but…

The best part is that we don't even know if it's a two-parter! It's a mini-movie/"multiepisode story arc" according to Hirsch, so a THREE parter actually seems to be more likely, really.

Y'know, this is exactly why I don't actually mind much myself when shows and stories are ending. 'Cause if the show knows what it's doing, that IS going to be the most amazing thing ever.

Just a thing - Finn ISN'T the comet that hit way back in Evergreen, that one was all green and lich-y. We have seen him as a comet before though, all the way back in the Vault! It's likely he was one of the OTHER many catalist comets that have hit the Earth.

The Lich is clearly more evil, but it's easier to hate Martin because he's more relatable as something that exists in reality - A bad father.