List

AOAC Problems and Solutions

An online astronomy contest run in 2025 by AO Guide, the site behind aoXiv: a multiple-choice Open round, then an Invitational paper of five problems for the top scorers. Here are both papers and the Open round's answer key.

2025

Online

Open
Problems1 problem
Invitational
Problems5 problemsProblems
  • 1Am I precessing?? (Or just tripping?)not published
  • 2Hijacking the Royal Swedish Academy of Sciencesnot published
  • 3Finding Riccardonot published
  • 4Among the starsnot published
  • 5Wait, where are Ayush and Osish?not published