- Need help?
AQA 3.9 3.9 Astrophysics (A-level only)
3.9.1 Telescopes (A-level only)
- 3.9.1.1 Astronomical telescope consisting of two converging lenses
- 3.9.1.2 Reflecting telescopes
- 3.9.1.3 Single dish radio telescopes, I-R, U-V and X-ray telescopes
- 3.9.1.4 Advantages of large diameter telescopes
3.9.2 Classification of stars
- 3.9.2.1 Classification by luminosity
- 3.9.2.2 Absolute magnitude, M
- 3.9.2.3 Classification by temperature, black-body radiation
- 3.9.2.4 Principles of the use of stellar spectral classes
- 3.9.2.5 The Hertzsprung-Russell (HR) diagram
- 3.9.2.6 Supernovae, neutron stars and black holes
3.9.3 Cosmology (A-level only)
- 3.9.3.1 Doppler effect
- 3.9.3.2 Hubble's law
- 3.9.3.3 Quasars
- 3.9.3.4 Detection of exoplanets