Shown following are the names of several eras that are used to descried the history of the universe. Rank the eras from left to right in the order in which they occurred from first to last. 1. era of nucleosynthesis - fusion created helium nuclei2. particle era - protons, neutrons both common3. era of nuclei - H, He nuclei and electrons existed, but no neutral atoms4. era of atoms - neutral atoms existed, but not stars5. era of galaxies - stars and galaxies common6. Planck era - all 4 forces operated as one7.electroweak era - 3 forces operated: gravity, strong, electroweak8. GUT era - strong, electroweak forces unite as GUT force