宇宙規模の時間を感じると幸せになる。

The Cosmic Calendar The 13.8 billion year history of the universe scaled down to a single year, where the Big Bang is January 1st at midnight, and right now is midnight 1 year later January | February | March | April | May | June | July | August | September | October | November | December Known from telescopes looking back in time, physical models The Big Bang, Stars First Appear | [various galaxy images] | Thin Disk of the Milky Way | [galaxy images] Known from geologic record, fossils, genetic drift The Solar System, Life | Oxygen from Photosynthesis | Eukaryotic Cells | Multicellular Life The Month of December... 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 15 Trace Fossils Only | 16 | | 17 Bones and Shells | 18 Vertebrates | 19 Land Plants | | 20 Fish with Jaws | 21 Insects 22 Amphibians | 23 Reptiles | 24 Pangaea Forms | 25 Dinosaurs | 26 Mammals | 27 Birds | 28 Flowers 29 Tyrannosaurs | 30 Dinosaurs Extinct, Mammals Take Over on Land and in Sea | 31 The Final Day... | | | | | | | | Dawn: Apes and Monkeys Split | 8 PM: Humans and Chimpanzees Split | 9:25: Humans First Walk Upright | 10:30: Human Brain Size Begins Tripling | 11:52: Modern Humans Evolve | 11:56 to 11:59: Human Migration | The Final Minute... A human life only lasts for the blink of an eye on the Cosmic Calendar. 100 years × 365 × 24 × 60 × 60 / 13,800,000,000 = 0.23 Cosmic Seconds Known from artifacts, radiocarbon dating, DNA extraction from remains | Written records | | End of Last Ice Age, Sea Level 400 Feet Lower Than Now | | Agriculture Leads to Permanent Settlements | Columbus Arrives in America (1.2 Seconds Ago) | Christ Born | Muhammad Born | | Old Testament, Buddha | | Dynastic China Begins | 60 | 55 | 50 | 45 | 40 | 35 | 30 | 25 | 20 | 15 | 10 | 5 | 0 JAN FEB MAR APR MAY AUG SEPT DEC On this scale of time: -1 month represents 1 billion years. -1 day represents 38 million years. - 1 hour represents 1.56 million years. - 1 minute represents 26,050 years. - 1 second represents 434 years. January 1 - The Early Universe - Observations indicate that the universe began about 14 billion years ago in what we call the big bang. All matter and energy came into being at that time. The expansion of the universe also began at that time, and continues to this day. JAN FEB MAR JANUARY 1 This image shows the cosmic microwave background, which represents the radiation leftover from the big bang- January 1 on the cosmic calendar. September 3 - Birth of our Solar System - Our solar system was born from a cloud of gas and dust about 4.5 billion years ago. The sun formed at the center of the cloud while the planets, including the Earth, formed in a disk surrounding it. SEPT OCT NOV SEPTEMBER 3 This illustration shows what the solar system may have looked like shortly before the Sun and planets finished forming 4 500, 000 years ago. December 31 - Human History - On the cosmic calendar, our hominid ancestors arose only a few hours ago, and all of recorded human history has occu