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Our premium yoga mats are 24" wide x 72" tall x 0.25" thick and made from natural rubber with a blended microfiber top surface. The top of the mat has the image printed on it, and the back is solid black with textured dimples for better floor grip.
Cecilia Payne-Gaposchkin (May 10, 1900 - December 7, 1979) was an English-American astronomer and astrophysicist. In 1923, after meeting Harlow... more
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Cecilia Payne-Gaposchkin (May 10, 1900 - December 7, 1979) was an English-American astronomer and astrophysicist. In 1923, after meeting Harlow Shapley, the Director of the Harvard College Observatory, who had just begun a graduate program in astronomy, she left England. In her 1925 PhD thesis, she proposed an explanation for the composition of stars in terms of the relative abundances of hydrogen and helium. In 1931, she became an American citizen. On a tour through Europe she met Russian-born astrophysicist Sergei I. Gaposchkin. She helped him get a visa to the US and they married in 1934. She studied stars of high luminosity in order to understand the structure of the Milky Way. She studied variable stars, making over 1,250,000 observations with her assistants. This work later was extended to the Magellanic Clouds, adding a further 2,000,000 observations of variable stars. These data were used to determine the paths of stellar evolution. She remained scientifically active througho...
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