Star Facts: The Basics of Star Names and Stellar Evolution

Jun 17th, 2015
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Stars are giant, luminous spheres of plasma. There are billions of them — including our own sun — in the Milky Way Galaxy. And there are billions of galaxies in the universe. So far, we have learned that hundreds also have planets orbiting them.

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Floravil M.SernaBBA-Management IIIReference:Star Facts: The Basics of Star Names and Stellar EvolutionThe Healthy Eating Trends Of 2015(The Daily Western)by Charles Q. Choi, Space.com Contributor | December 16, 2014 09:41pm ETCredit: University of LeicesterView full size imageStars are giant, luminous spheres of plasma. There are billions of them - including our own sun - in the Milky Way Galaxy. And there are billions of galaxies in the universe. So far, we have learned that hundreds also have planets orbiting them.History of observationsSince the dawn of recorded civilization, stars played a key role in religion and proved vital to navigation.Astronomy, the study of the heavens, may be the most ancient of the sciences. The invention of the telescope and the discovery of the laws of motion and gravity in the 17th century prompted the realization that stars were just like the sun, all obeying the same laws of physics. In the 19th century, photography andspectroscopy- the study of the wavelengths of light that objects emit - made it possible to investigate the compositions and motions of stars from afar, leading to the development of astrophysics. In 1937, the first radio telescope was built, enabling astronomers to detect otherwise invisible radiation from stars. In 1990, the first space-based optical telescope, theHubble Space Telescope, was launched, providing the deepest, most detailed visible-light view of the universe.Star namingAncient cultures s

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