Epochs extends the play time of Planetarium by starting with a solar system in its infancy and includes the Late Heavy Bombardment for a more epic experience. Frost Line adds four pieces to the board that makes up the frost line. This module allows High and Low Evolution cards to be played within or beyond the frost line to accrue Heat or Cold tokens. Heat and Cold tokens earn extra points but can be melted or cooled off cards when planets move around the solar system.