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Cambridge IGCSE Physics practice

What is the primary component of a galaxy?

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MCQ

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Stars

Exam-style question

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What is the primary component of a galaxy?.

  1. A.Planets
  2. B.Billions of stars
  3. C.Comets
  4. D.Asteroids

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Description

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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