"Darwin was the first to use data from nature to convince people that evolution is true, and his idea of natural selection was truly novel. It testifies to his genius that the concept of natural theology, accepted by most educated Westerners before 1859, was vanquished within only a few years by a single five-hundred-page book. On the Origin of Species turned the mysteries of life's diversity from mythology into genuine science." -- Jerry Coyne
Friday, June 21, 2019
Stonehenge
Wikipedia - Stonehenge
Stonehenge is a prehistoric monument in Wiltshire, England, two miles (3 km) west of Amesbury. It consists of a ring of standing stones, with each standing stone around 13 feet (4.0 m) high, seven feet (2.1 m) wide and weighing around 25 tons. The stones are set within earthworks in the middle of the most dense complex of Neolithic and Bronze Age monuments in England, including several hundred burial mounds.[1]
Archaeologists believe it was constructed from 3000 BC to 2000 BC. The surrounding circular earth bank and ditch, which constitute the earliest phase of the monument, have been dated to about 3100 BC. Radiocarbon datingsuggests that the first bluestones were raised between 2400 and 2200 BC,[2] although they may have been at the site as early as 3000 BC.[3][4][5]
One of the most famous landmarks in the United Kingdom, Stonehenge is regarded as a British cultural icon.[6] It has been a legally protected Scheduled Ancient Monument since 1882 when legislation to protect historic monuments was first successfully introduced in Britain. The site and its surroundings were added to UNESCO's list of World Heritage Sites in 1986. Stonehenge is owned by the Crown and managed by English Heritage; the surrounding land is owned by the National Trust.[7][8]
Stonehenge could have been a burial ground from its earliest beginnings.[9] Deposits containing human bone date from as early as 3000 BC, when the ditch and bank were first dug, and continued for at least another five hundred years.[10]
Stonehenge was produced by a culture that left no written records. Many aspects of Stonehenge, such as how it was built and which purposes it was used for, remain subject to debate. A number of myths surround the stones.[35] The site, specifically the great trilithon, the encompassing horseshoe arrangement of the five central trilithons, the heel stone, and the embanked avenue, are aligned to the sunset of the winter solstice and the opposing sunrise of the summer solstice.[36][37] A natural landform at the monument's location followed this line, and may have inspired its construction.[38] The excavated remains of culled animal bones suggest that people may have gathered at the site for the winter rather than the summer.[39] Further astronomical associations, and the precise astronomical significance of the site for its people, are a matter of speculation and debate.
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