Astronomy › Section A · Science and the universe › Topic A.3
A tour of the universe, large and small
This quick journey outward from Earth, to the edge of what we can observe and then down into the atom, introduces the objects and scales the rest of the course explores in detail.
In this topic
- Starting at home: Earth and Moon
- The Sun and its family
- Worked example: shrinking the solar system
- Planets around other stars
- Our galaxy, the Milky Way
- Dark matter and the lives of stars
- Galaxies beyond our own
- Clusters, superclusters and beyond
- The universe of the very small
- Worked example: the cosmic calendar
- Common mistakes to avoid
- Key takeaways
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