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Galaxies, stars and planets
Galaxies, stars and planets

Start this free course now. Just create an account and sign in. Enrol and complete the course for a free statement of participation or digital badge if available.

Learning outcomes

After studying this course, you should be able to:

  • understand the scale of items within the Universe

  • appreciate the wide variety of objects contained in the Universe

  • understand the relative sizes of the planets within the Solar System

  • calculate how long it takes for light to reach the Earth from the Sun.