Universe In A Year - Carl Sagan
Carl Sagan, the American Astronomer had come up with a cosmic calendar as a way for people to understand the history of the universe. He put the entire period starting with the Big Bang till now into an earth year (all relative) with the human history crowding in the last five minutes. Interestingly the earth formed after nine months in the cosmic calendar in the month of September. The homo sapiens appeared in the last five minutes of the day and the last five hundred years have happened in the last second which continues even now. If you see the calendar it becomes easier to comprehend what happened when and how long it took relative to other events. Have a look at the Cosmic Calendar: 01 Jan - Big Bang , universe formed 15 Mar - Galaxies and five stars formed 01 May - Our own galaxy, the Milky Way formed 08 Sep - Our Sun Formed 09 Sep - Our Solar System formed 12 Sep - Earth formed 13 Sep - The Earth's moon formed 20 Sep - Earth's atmosphere formed 01 Oct - First life form a...