I've been back on an astrophysics/darwinism kick lately, and have been reading a bunch of Richard Dawkins and Carl Sagan books that I missed the first time around. As always, Carl Sagan is amazing at putting the universe into perspective. I want to quote him here. The book is Dragons of Eden. At this particular point he's talking about time, or has he puts it "cosmic chronology". The universe is 15 billion years old. 15 billion is a big number that most of us can't really comprehend. What follows his Carl Sagan's attempt to put this number into perspective.
The most instructive way I know to express this cosmic chronology is to imagine the fifteen-billion-year lifetime of the universe (or at least its present incarnation since the Big Bang) compressed into the span of a single year. Then every billion years of Earth history would correspond to about twenty-four days of our cosmic year, and one second of that year to 475 real revolutions of the Earth about the sun.PRE-DECEMBER DATES
January 1 | Big Bang |
May 1 | Origin of the Milky Way Galaxy |
September 9 | Origin of the solar system |
September 14 | Formation of the Earth |
September 25 | Origin of life on Earth |
October 2 | Formation of the oldest rocks known on Earth |
October 9 | Date of oldest fossils (bacteria and blue-green algae} |
November 1 | Invention of sex (by microorganisms) |
November 12 | Oldest fossil photosynthetic plants |
November 15 | Eukaryotes (first cells with nuclei) flourish |
DECEMBER 31
1:30 P.M. | Origin of Proconsul and Ramapithecus, probable ancestors of apes and men |
10:30 P.M. | First humans |
11:00 P.M. | Widespread use of stone tools |
11:46 P.M. | Domestication of fire by Peking man |
11:56 P.M. | Beginning of most recent glacial period |
11:58 P.M. | Seafarers settle Australia |
11:59 P.M. | Extensive cave painting in Europe |
11:59:20 P.M. | Invention of agriculture |
11:59:35 P.M. | Neolithic civilization; first cities |
11:59:50 P.M. | First dynasties in Sumer, Ebla and Egypt; development of astronomy |
11:59:51 P.M. | Invention of the alphabet; Akkadian Empire |
11:59:52 P.M. | Hammurabic legal codes in Babylon; Middle Kingdom in Egypt |
11:59:53 P.M. | Bronze metallurgy; Mycenaean culture; Trojan War; Olmec culture: invention of the compass |
11:59:54 P.M. | Iron metallurgy; First Assyrian Empire; Kingdom of Israel; founding of Carthage by Phoenicia |
11:59:55 P.M. | Asokan India; Ch'in Dynasty China; Periclean Athens; birth of Buddha |
11:59:56 P.M. | Euclidean geometry; Archimedean physics; Ptolemaic astronomy; Roman Empire; birth of Christ |
11:59:57 P.M. | Zero and decimals invented in Indian arithmetic; Rome falls; Moslem conquests |
11:59:58 P.M. | Mayan civilization; Sung Dynasty China; Byzantine empire; Mongol invasion; Crusades |
11:59:59 P.M. | Renaissance in Europe; voyages of discovery from Europe and from Ming Dynasty China; emergence of the experimental method in science |
Now: first second of New Year's Day. | Widespread development of science and technology; emergence of a global culture; acquisition of the means for self-destruction of the human species; The first steps in spacecraft planetary exploration and of the search for extraterrestrial intelligence. |
Reading stuff like this seems to help me put the little things in perspective. Why should I stress over some minute detail of my life when an hour and a half ago I was still an ape, picking nits out of my mate's fur, and 14 minutes ago I was still eating raw meat (on a bone nonetheless!)?
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