The conversation between human and AI assistant.
How accurate is the cosmic calendar?
How was the cosmic calendar created?
The cosmic calendar was first popularized by Carl Sagan in his book "The Dragons of Eden" in 1977. It's based on the idea of compressing the history of the universe into a single year, with each month representing roughly 1.2 billion years. The calendar has since been revised and updated as new discoveries have been made in the field of astrophysics.