BAAO & Astro Challenge Past Papers & Solutions
British Astronomy and Astrophysics Olympiad
BAAO and Astronomy & Astrophysics Challenge past papers with solutions — orbits, stellar physics, cosmology and observational data problems.
- Eligibility
- Year 13 (BAAO) and Year 11–13 (Astro Challenge)
- Format
- Long-answer astrophysics problems with data analysis
- Duration
- Approximately 2 hours 45 minutes (BAAO)
- Scoring
- Written marks with Gold, Silver and Bronze certificate tiers
The British Astronomy and Astrophysics Olympiad applies A-Level mechanics and a little new astrophysics to genuinely astronomical situations: orbital dynamics, stellar luminosity, redshift, telescope resolution and real observational data. Most students find the physics familiar and the context unfamiliar, so past papers do double duty — they teach the astronomy vocabulary and they drill the long symbolic derivations the paper is built around.
Past papers by year
Each year page lists the official paper source (paper BAAO and paper Astro Challenge), the answer key location, difficulty notes and how to review your solutions.
Stuck on a BAAO & Astro Challenge 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.
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What the paper tests
Orbital mechanics
Stellar physics
Cosmology
Observational astronomy
Data analysis
Where it leads: Top BAAO scripts lead to UK team selection for the IOAA. See our coaching programme.
Book personalised BAAO & Astro Challenge classes
Past papers show you the gap; a mentor closes it. Our BAAO & Astro Challenge mentors are medal winners who walk through every solution 1-to-1, then set targeted practice on the archetypes you lost marks on.
Want the full BAAO & Astro Challenge paper pack and score guide?
Tell us your target and we will send the BAAO & Astro Challenge paper list, the official scoring rules and a preparation plan built around the questions you keep losing marks on.
Free to ask. No spam, ever — we only reply about your question.
Frequently asked questions
- Where can I find BAAO past papers and solutions?
- The BPhO publishes BAAO and Astronomy & Astrophysics Challenge past papers with full solutions on its website. We link to the official archive and coach the derivations step by step.
- Do I need to have studied astronomy before?
- No. The physics is A-Level mechanics, gravitation and waves; the astronomy conventions — magnitudes, parsecs, redshift — are learnable in a few sessions and then recur in every paper.