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Paper 3Theory (Core)1 marks
Galaxies are vast collections of stars.
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Galaxies and Stars
Galaxies consist of billions of stars, including the Sun, which is located in the Milky Way galaxy. Other stars in the Milky Way are much farther from Earth than the Sun. Distances in astronomy are measured in light-years, where one light-year is the distance light travels in a year in a vacuum.
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State What is the primary component of a galaxy?
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