The AQA A-level Physics Paper 3B (June 2022), Option A (Astrophysics), examines concepts such as optical telescopes, eclipsing binaries, quasars, and cosmic background radiation. Topics include ray diagrams for spherical aberration and refracting telescopes, magnitude analysis of binary star systems, and spectral line shifts for orbital speed calculations. The paper evaluates observational techniques using CCDs and naked eye, properties of quasars, black hole density, and evidence supporting the Big Bang theory through cosmic microwave background radiation. Keywords: AQA Physics, astrophysics, refracting telescope, eclipsing binaries, quasars, Big Bang theory, cosmic background radiation, black holes.