This satellite photo from NASA spans a 24-hour period showing the entire surface of the Earth in darkness. The lights obviously show the highest areas of concentration of civilization.
Note the Nile River delta, the Siberian Express railway route, the Australian coastal cities, and Africa, literally "the dark continent".From Princeton's International Networks Archive, the old project of Jonathan Harris.
Entries in planets (25)
The show is full of different visual methods to visual strings, gravity, the scale of particles and multiple dimensions. Brian Greene really did a fantastic job with this show based on his book on the same name.
This last December was the 10th anniversary of Carl Sagan's death. One of his most popular episodes of Cosmos was titled The Dragons of Eden where he first described his Cosmic Calendar. This website from discovery.com has a simple image showing the Cosmic Calendar as Carl described it. A few websites are selling posters of the Cosmic Calendar, like AllPosters.com.
The premise is that if you compress the entire history of the universe into a calendar year, homo sapiens only exist in the last 6 minutes, and the last second represents the last 400+ years of human history.
You can see Cosmos, and hear Carl describe it on YouTube here:
No numbers or measurements. Easy to understand. So simple, yet SO informative.