Here's a first draft of an SCP. I call it the Stellophage. Please tell me how I can improve.
planetary evacuation procedures
Evacuation to where?
Seriously though, the tone here isn't great. It needs to be more clinical. For example, instead of "believed", try "evidence suggests" (and make sure you've talked about some kind of logical evidence for the suggestion). The quotation marks around the teeth made it seem kinda wishy-washy. If you're making it seem like an animal that eats stars, make it an animal that eats stars. Don't muck about. Also the technobabble about astronomy, chemistry and extra-dimensionality wasn't great either.
As for the concept, there's nothing here that's particularly interesting. It's currently just a description of what it does, with nothing to draw the reader in. It needs meat, it needs a hook. For example, SCP-1795 has the end comment that makes it seem like we created it, giving the reader a moment of pause.
I'm sure an established contributor will give a more thorough review than I, but my advice would be to put this on the back burner while you worked on less ambitious ideas.
EDIT: Just found something very very similar in concept to what you've written in the collapsible in Smapti's comment at the top of the second page.