The Universe — Difficult
Transfer your understanding to a changed context, justify decisions and check your reasoning. No hints during the test.
Includes extension practice
Galaxies and the broad Big Bang account are included. Redshift, Hubble calculations and cosmic-microwave-background detail extend this syllabus.
Easy, Normal and Difficult describe practice demand; they are not the official Core and Extended tiers.
- Cambridge IGCSE Combined Science 0653 syllabus 2028–2029 · P5.2.3, p59
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