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Mayan astronomers discover an 18.7-year cycle in the rising and setting of the Moon.From this they created the first almanacs – tables of the movements of the Sun, Moon, and planets for the use in astrology.
1963: Maria Goeppert Mayer became the first American woman to receive a Nobel Prize in Physics; she shared the prize with J. Hans D. Jensen "for their discoveries concerning nuclear shell structure" and Eugene Paul Wigner "for his contributions to the theory of the atomic nucleus and the elementary particles, particularly through the discovery ...
This list of African-American inventors and scientists documents many of the African-Americans who have invented a multitude of items or made discoveries in the course of their lives. These have ranged from practical everyday devices to applications and scientific discoveries in diverse fields, including physics, biology, math, and medicine.
In 1898, she was appointed Curator of Astronomical Photographs at Harvard, the first woman to hold the position. [13] At the 1893 World's Fair in Chicago, Fleming openly advocated for other women in the sciences in her talk "A Field for Woman's Work in Astronomy", where she openly promoted hiring female assistants in astronomy. Her speech ...
Martha P. Haynes (born 1951), American astronomer specialized in radio astronomy and extragalactic astronomy; Martha Locke Hazen (1931-2006), American astronomer; E. Ruth Hedeman (1910–2006), American solar astronomer; Mary Lea Heger (1897–1983), American astronomer who studied the interstellar medium; Charlene Heisler (1961-1999), Canadian ...
Fleming went on to help develop a classification of stars based on their hydrogen content, as well as play a major role in discovering the strange nature of white dwarf stars. [8] Williamina continued her career in astronomy when she was appointed Harvard's Curator of Astronomical Photographs in 1899, also known as Curator of the Photographic ...
Nancy Grace Roman (May 16, 1925 – December 25, 2018) was an American astronomer who made important contributions to stellar classification and motions. The first female executive at NASA, Roman served as NASA's first Chief of Astronomy throughout the 1960s and 1970s, establishing her as one of the "visionary founders of the US civilian space program".
Bolas – bolas are a type of throwing weapon made of weights on the ends of interconnected cords and were initially used to capture animals via the entanglement of their legs. Bolas were used in the Andes and Patagonia where indigenous peoples–particularly the Tehuelche–used them to catch 200-pound guanaco and ñandú .