Played very similar to the card game speed. Split the deck in two equal stacks. Each player (2) gets a stack from the split deck and draws the top 5 cards. Beginning with the stellar nebula, students put down cards as fast as they can in the order of the star life cycle. They can choose either Main Sequence or Massive star but the life cycle must continue the chosen cycle. No mixing cycles! The players should continue to draw from their stacks to constantly have 5 cards in their hands to play. The student that runs out of his/her stack first wins!