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French philosopher and mathematician René Descartes was the first to propose a model for the origin of the Solar System in his book The World, written from 1629 to 1633.. In his view, the universe was filled with vortices of swirling particles, and both the Sun and planets had condensed from a large vortex that had contracted, which he thought could explain the circular motion of the plane
The Solar System travels alone through the Milky Way in a circular orbit approximately 30,000 light years from the Galactic Center. Its speed is about 220 km/s. The period required for the Solar System to complete one revolution around the Galactic Center, the galactic year, is in the range of 220–250 million years. Since its formation, the ...
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The chronology of the universe describes the history and future of the universe according to Big Bang cosmology. Research published in 2015 estimates the earliest stages of the universe's existence as taking place 13.8 billion years ago, with an uncertainty of around 21 million years at the 68% confidence level. [1]
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Answers in the Form of Questions is 2020 book [1] about Jeopardy! by American author Claire McNear. [2]In addition to collecting the stories of past champions and the broader history of the game, [3] [4] the book goes into the histories of Alex Trebek and long running champions including Ken Jennings, Brad Rutter and James Holzhauer. [5]
American history books (1 C, 284 P) B. Biographical books (12 C, 143 P) British history books (8 P) C. Canadian history books (23 P) I. Indian history books (2 P)
Early Baltic society: Norbertas Vėlius, in his book Senovės baltų pasaulėžiūra (The Ancient Baltic Worldview), identified three regions with three classes. The priestly class was centered in Prussia , the warrior class was prominent in the outer highlands, and the farming class predominanted in the intermediate flatlands.