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ByadminThe Milky Way is a massive barred spiral galaxy, approximately 100,000 to 180,000 light-years in diameter, containing 100–400 billion stars, including our Sun. As part of the Local Group, this cosmic structure features a central supermassive black hole, Sagittarius A*, surrounded by a bulging core and rotating spiral arms. The Solar System resides in the…
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Byadminsolar system The solar system is a gravitationally bound system comprising the Sun—a G2V-type star—and all celestial objects that orbit it, formed approximately 4.6 billion years ago from a massive, collapsing interstellar gas and dust cloud. Located in the Milky Way galaxy’s Orion-Cygnus Arm, it contains eight recognized planets divided into four inner rocky terrestrial…
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