Nah, I've seen several comic pages ahead: she eats all of the empty, uninhabited planets in the star system before teleporting back to her homeworld again and trapping it inside of a cute security bubble necklace made from magic before devouring the sun itself and moving onto the closest star system. While there she finds that there is sentient life on one of the planets. Rainbow Dash looks over her shoulder as a new planet appears inside of Twilights magic necklace as Twilight noms the rest of the star system.