Planet Niptune/Timeline

4.6 billion years ago (4.6 Ga): Niptune's core formed in an orbit near Zoopiter and Baturn. It was closer to Sun than today. (even closer than Urantler)                                                                                                          4.5 billion years ago (4.5 Ga): Niptune grew in size collecting gas from the surroundings. 4.1 billion years ago (4.1 Ga): Zoopiter and Baturn's gravity pushed Niptune to the edge of the Zoolar System. Niptune became 8th planet from the Sun. Niptune acquired an icy dwarf planet from the kuiper belt. This object is present day's Tritontler, the largest moon of Niptune. Niptune's gravity crushed a moon which came too close to form its rings. Today: Niptune is the farthest planet from the Sun. Dark spots form in its atmosphere. Niptune is in 3:2 orbital resonance with Pawluto. 3.6 billion years from now (+3.6 Ga): Niptune's moon Tritontler will collide with the planet to form a new larger ring system. 5 billion years from now (+5 Ga): Niptune will become the 6th planet from the Sun when it becomes a red giant star.