The Cosmic Calendar summarizes the history of the universe into a way that is easy for humans to comprehend-one 12-month calendar year. The universe is about 14 billions years old, so each month of the year represents a little more than a billion years of the universe’s history. Using this model, all of human history can be condensed into the last few hours of the last day of the year. The dinosaurs would have gone extinct on December 30th. Early hominids would have evolved at 9:00pm on December 31st.
This way to visualize the history of the universe is incredibly helpful in visualizing and comprehending the vastness of the time that the universe has been around. Human beings cannot comprehend a large a number as 14 billion.
Solar System Discovery 
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