The Power-Up Origin Hypothesis
A question one might ask in regards to the Mario lore is where do Power-Ups come from, well I have a hypothesis.
So in Super Mario Galaxy you can feed a Lumalee at the Luma Shop to get a mushroom of your choice.
Afterwards eating the Star Bits the Lumalee will transform in into either a 1-Up Mushroom or Life Shroom which Mario eats to aid him in his quest.
I believe this is where Power-Ups in the Mushroom Kingdom come from, whether it be a Super Mushrooms or Super Stars. Which also make sense because Lumas do become things like planets, galaxies, and Power Stars as well.
So a Super Star would make sense and explain where they come from.
Since Mario eats the Super Mushroom and Fire Flower this must time into the cycles Rosalina speaks of.
On top of that this would explain why power-ups like Super Stars are sapient, and Mushrooms like the Rotten Mushroom and Poison Mushroom seem to be alive. Written by Eris the Lorekeeper