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A galaxy is a system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity. The word is derived from the Greek ...
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The following is a list of notable galaxies. Size (left) and distance (right) of a few well-known galaxies put to scale. There are about 51 galaxies in the ...
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This is a list of largest galaxies known, sorted by order of increasing major axis diameters. The unit of measurement used is the light-year A Hubble Space ...
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The following is a timeline of galaxies, clusters of galaxies, and large-scale structure of the universe. Contents. 1 Pre-20th century; 2 Early 20th century ...
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The Andromeda Galaxy is a barred spiral galaxy and is the nearest major galaxy to the Milky Way. It was originally named the Andromeda Nebula and is ...
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Spiral galaxies have a complex structure: a dense central bulge lies at the centre of a rotating disc, which features a spiral structure that originates at the ...
The Milky Way is a huge collection of stars, dust and gas. It's called a spiral galaxy because if you could view it from the top or bottom, it would look like a ...
The study of galaxy formation and evolution is concerned with the processes that formed a heterogeneous universe from a homogeneous beginning, the formation ...
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