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![Proxima centauri [The star closest to the Solar system]](https://image.slidesharecdn.com/theuniverse-110126134011-phpapp01/85/The-universe-13-320.jpg)








This document discusses the structure of the universe, including our Milky Way galaxy which has a spiral shape and contains our solar system. It also mentions other galaxies and constellations visible in the night sky. Specific topics covered include Proxima Centauri being the closest star to our solar system and the Columbia space shuttle accident.












![Proxima centauri [The star closest to the Solar system]](https://image.slidesharecdn.com/theuniverse-110126134011-phpapp01/85/The-universe-13-320.jpg)






