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    BAAO & Astro Challenge 2023 Past Paper & Solutions

    British Astronomy and Astrophysics Olympiad 2023 — Long-answer astrophysics problems with data analysis, Approximately 2 hours 45 minutes (BAAO). Scoring: Written marks with Gold, Silver and Bronze certificate tiers.

    Papers in this sitting

    • BAAO & Astro Challenge 2023 BAAO — Long-answer astrophysics problems with data analysis, official answer key included
    • BAAO & Astro Challenge 2023 Astro Challenge — Long-answer astrophysics problems with data analysis, official answer key included
    Open the official archive

    How to work through this paper

    1. Sit the full paper timed at Approximately 2 hours 45 minutes (BAAO), no calculator or notes.
    2. Mark it against the official key before you look at any solution.
    3. Rewrite complete solutions for every question you missed or guessed — writing it out is what moves the technique into recall.
    4. Tag each loss by topic (Orbital mechanics, Stellar physics, Cosmology, Observational astronomy, Data analysis).
    5. Re-sit the same paper one week later and compare the time to your first attempt.

    Topics tested in BAAO & Astro Challenge 2023

    Orbital mechanicsStellar physicsCosmologyObservational astronomyData analysis

    Stuck on a BAAO & Astro Challenge 2023 question?

    Send us the question number. A mentor who has sat and medalled in BAAO & Astro Challenge will reply with a step-by-step walkthrough and the faster competition method.

    Free to ask. No spam, ever — we only reply about your question.

    View the BAAO & Astro Challenge course

    FAQs

    Where can I find the BAAO & Astro Challenge 2023 paper and answers?
    The official BAAO & Astro Challenge 2023 paper and answer key are published by BPhO — use the official archive link on this page. We do not re-host copyrighted papers, but our mentors walk through every question with you step by step.
    How hard was the BAAO & Astro Challenge 2023 paper?
    Like every year, the first section is speed-and-accuracy work and the final third carries the discrimination. Sit it timed (Approximately 2 hours 45 minutes (BAAO)), mark it against the official key, then rewrite full solutions for anything you missed or guessed.
    Can I get worked solutions for BAAO & Astro Challenge 2023?
    Yes. Book a free trial session and bring the questions you are stuck on — a mentor will work through the full solution and the faster competition method, then set targeted practice on the same archetype.