Abstract
The word Galaxy comes from the Greek and means Milky Way. For the ancient Greeks the Milky Way consisted of namely milk poured out by the goddess Hera. If we write Galaxy we mean the Milky Way, if we write galaxy any giant star system.
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Notes
- 1.
From P. Schneider, Extragalactic astronomy and cosmology, Springer.
- 2.
Named after a Dutch radio telescope.
- 3.
1 Gyr = 1 gigayear, 109 Years.
- 4.
These are two dwarf galaxies gravitationally bound to the Milky Way.
- 5.
Cf: solar system; Mercury moves faster around the Sun than, say, Mars.
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Hanslmeier, A. (2023). The Galaxy. In: Introduction to Astronomy and Astrophysics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-64637-3_13
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DOI: https://doi.org/10.1007/978-3-662-64637-3_13
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