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AQA 3.9 Astrophysics
The Universe is studied in this module, including objects far away from the Earth and way in which astronomers can gather information about these.
Option A
3.9.1 Telescopes
3.9.2 Classification of Stars
Magnitude - Apparent and absolute magnitude of stars
Distances in Space - Some of these are really really big!
Wien's Displacement Law - The wavelength of maximum intensity radiation that is emitted
Stefan's Law - The relationship between the light emitted and the temperature of a star
Stars - The life of stars, including how they are formed and how they die
Spectral Classes - The way that stellar objects are classified
3.9.3 Cosmology
Cosmology - The cosmological principle
Spectra - We use these to determine the elements and compounds in faraway objects
Redshift - The change in wavelength of light from distant objects
Hubble's Constant - Measuring this constant is one of the biggest challenges in astronomy
Age of the Universe - The origin and evolution of the universe
Quasars - Quasi-stellar radio sources from distant galaxies