Register for the 2018 USAAAO!

Registration for the First Round of the 2018 USAAAO is now open on our registration page until Feb 7 at 11:59 PM EST! For information about the selection process, see our selection process page.

Note that this year we are changing the registration process so that students must be registered by a teacher who will proctor the exam. If you believe you can’t find a teacher or have any other questions about the USAAAO send us an email at

If you’re new to the USA Astronomy and Astrophysics Olympiad, we select and train a team of students each year to attend the International Olympiad on Astronomy and Astrophysics. Our selection exams will cover a broad variety of topics from cosmology to observational astronomy. Anyone is welcome to participate, however you must be a US citizen or permanent resident to qualify for the team.

Check out our Resources page to see what kinds of things might appear on an exam. See our About page to learn more about the USAAAO. Email us at if you have any questions.