Dwarf galaxies

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  • The Local Group of Galaxies is the small, loose cluster to which our Milky Way Galaxy belongs. It consists of approximately 36 known members, most of which are dwarf galaxies. This Atlas includes identification charts for 32 members for which identification atlases have not hitherto been published. There are numerous atlases of various sorts for the Milky Way Galaxy and there is a published atlas for M31 and its two close companions, M32 and NGC 205 (Hodge 1981). The Magellanic Clouds have also been covered by identification atlases (Hodge and Wright 1967 and 1977).

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  • Water is one of the basic elements for life. It is even assumed that the evolution of life is only possible if there is liquid water present. A water molecule has some remarkable properties that make it quite unique in the universe. In the first chapter of this book we will review these basic properties of water and the role of water on Earth. All ancient civilizations realized the importance of water and their cities were constructed near great reservoirs of water.

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  • Tham khảo sách 'an atlas of local group galaxies_1', khoa học tự nhiên, vật lý phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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