>>120173865It was one of his avatars that was destroying planets. It more or less established that Starlord could do the same to the real thing, but he can't go back to Earth right now because Zeus is coming for him.
More or less, this wrapped up the subplot about the start in the sky going out, so it's compatible to Prime, but it has a slightly bigger impact on the story since it there has been a real impact on the story.