List

BAAO Problems and Solutions

The astronomy olympiad of the British Physics Olympiad, whose Round 2 paper picks the UK's IOAA team. Here are the Round 2 papers from 2016 to 2026 and the first competition and trial papers of 2015, with BPhO's marking schemes up to 2025.

2026

United Kingdom

Problems3 problemsProblems
  • 1Poynting Into a Starnot published
  • 2Seeing the First Starsnot published
  • 3Television Satellitenot published

2025

United Kingdom

Problems3 problemsProblemsSolutions
  • 1Gravity Trainnot published
  • 2The Fate of the Earthnot published
  • 3Gravitational Microlensingnot published

2024

United Kingdom

Problems3 problemsProblemsSolutions
  • 1Maximum Payload to Marsnot published
  • 2Discworld Astrophysicsnot published
  • 3Heat Transfer in the Sunnot published

2023

United Kingdom

Problems3 problemsProblemsSolutions
  • 1Solar Analemmanot published
  • 2Wolf-Rayet Dust Shellsnot published
  • 3Planetary Migration in Protoplanetary Disksnot published

2022

United Kingdom

Problems3 problemsProblemsSolutions
  • 1Sunrise in Oxfordnot published
  • 2Stellar Structurenot published
  • 3James Webb Space Telescopenot published

2021

United Kingdom

Problems3 problemsProblemsSolutions
  • 1Mercury's Rotation Period with Aricebonot published
  • 2Great Conjuctions and the Star of Bethlehemnot published
  • 3High Resolution Stellar Photosnot published

2020

United Kingdom

Problems3 problemsProblemsSolutions
  • 1Apollo 11not published
  • 2Event Horizon Telescope and Super Massive Black Holesnot published
  • 3Inspirals of Exoplanets Near Tidal Destructionnot published

2019

United Kingdom

Problems4 problemsProblemsSolutions
  • 1Parker Solar Probenot published
  • 2360 Days in a Yearnot published
  • 3Stellar Mass Limitsnot published
  • 4Superluminal Jetsnot published

2018

United Kingdom

Problems4 problemsProblemsSolutions
  • 1Stellar Mass Lossnot published
  • 2Multi-Messenger Astronomynot published
  • 3Great American Eclipsenot published
  • 4Super-Earths and Planet Ninenot published

2017

United Kingdom

Problems5 problemsProblemsSolutions
  • 1Martian GPSnot published
  • 2Hohmann Transfer Orbitsnot published
  • 3Starkiller Basenot published
  • 4Hanny's Voorwerpnot published
  • 5Imaging an Exoplanetnot published

2016

United Kingdom

Problems5 problemsProblemsSolutions
  • 1Asteroid Beltnot published
  • 2Supermoonsnot published
  • 3Interstellarnot published
  • 4Dyson structuresnot published
  • 5Gravitational lensingnot published

2015

United Kingdom

Competition paper1 problemAll problemsProblemSolution
  • 1Competition paperAll problemsProblemSolution
Trial paper1 problemAll problemsProblemSolution
  • 2Trial paperAll problemsProblemSolution