On the scale of the cosmic calendar, in which the history of the universe is compressed to 1 year, how long has human civilization (i.
Question
                On the scale of the cosmic calendar, in which the history of the universe is compressed to 1 year, how long has human civilization (i.e., since ancient Egypt) existed? – Q/A (Question and Answer)
                  
                Test Answer
Answer:
a few seconds
Recource Astronomy Chapter 1 Test Questions
                        
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