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Astrophysics and cosmology
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Subtopics and study areas
- Use black-body, luminosity and inverse-square relationships to analyse stars.
- Explain how spectra, parallax and brightness measurements provide astrophysical information.
- Use redshift and recession data to analyse evidence for an expanding Universe.
- Calculate redshift from observed and rest wavelengths.
- Use the small-redshift approximation to estimate recession speed.
- Interpret the Hubble relationship between recession speed and distance.