AQA A Level Physics 7408/3ba Astrophysics 2025 Mark Scheme

Get the official AQA A-Level Physics Paper 3 Section B Astrophysics mark scheme from the June 2025 series (7408/3BA) — the final v1.1 examiner-approved document used by AQA to award all 35 Section B marks for candidates who chose Astrophysics as their Paper 3 optional topic. This free downloadable PDF gives you the exact accepted answers, alternative responses, mark allocations, and crucial examiner guidance for every Astrophysics question on the paper.

Use it to mark your June 2025 mock attempts to the standard examiners apply — including telescope optics, Hertzsprung-Russell interpretation, magnitude calculations, Doppler red-shift problems, Hubble's-law applications, and exoplanet-detection questions. Pair it with the matching AQA 7408/3BA June 2025 question paper on markscheme.net for end-to-end exam practice. Updated for the 2025/2026 academic year (v1.1 — the latest examiner-amended version), optimised for mobile and desktop, and instantly downloadable — your fastest route to top-grade A-Level Physics revision in the Astrophysics option.

This mark scheme is built for AQA A-Level Physics (7408) students who chose Astrophysics as their Paper 3 Section B option and want to mark June 2025 past-paper attempts to the exact standard examiners apply. It is equally valuable for Year 13 learners polishing exam technique, Year 12 students working ahead, retake candidates targeting an A or A*, and home-schooled students who need an examiner-aligned reference but lack a teacher to mark their work.

Physics teachers, private tutors, and astrophysics-option leads can use this official AQA document to set timed Astrophysics-only mocks, run mark-scheme walkthroughs on cosmology and stellar evolution, moderate marking across classes, and identify the telescope-theory, magnitude-calculation, and Hubble-law misconceptions that cost the most marks. Parents supporting revision at home will find the structured answers, accepted alternatives, and examiner notes make it simple to give targeted feedback — even without a physics background.