National Astronomy Competition is less than a week away!

This year due to recent developing events we decided to move NAC online. All registered students should have received a confirmation email together with more detailed instructions and the table of constants. Some emails bounce or go to spam, so if you know you registered and didn’t receive an email, email us at!

We understand this situation is highly stressful and unusual for everyone so we thank all the participants on understanding and their cooperation! We are trying our best to adapt and accommodate everyone.

We wish all the students the best of luck in their final preparations!

Updated March 22nd: NAC is moving Online!

Due to COVID-19 situation and the high school closures across the nation, we decided to move the NAC to online proctoring with Zoom. We are offering 2 online sessions, one on April 3rd at 8pm Eastern and one on April 4th at 9am Eastern. Students from the same school should coordinate to take the exam at the same time slot. If you haven’t received an email from us and you qualified for the National Astronomy Competition, please email us at! We will send the detailed instructions and time slot confirmation once we receive everyone’s preferences. We understand that this is not an ideal situation, but we want to ensure we can enable students to safely take the exam across the different time zones.

We expect students to comply with the standard honors code and only students that qualified will be able to take the test. The exam will be monitored by our volunteers and recorded. Any suspicious behavior will be penalized. Showing your work is mandatory in this round and just a correct answer will bring no points.

Top 10 students will represent USA at the next IOAA in Colombia in September and will begin online training shortly after this round. Organizers are monitoring the situation and will assess in June whether to postpone the International Astronomy and Astrophysics Olympiad.

We thank you for your understanding and cooperation.

COVID-19 NAC Update and the Guest Team Update

We are aware that many schools are going to be closed during the current schedule, so we are working to figure out how to manage this situation. As soon as we establish a solution we will be emailing all the students and proctors. For now students should still be ready to take the exam during the scheduled window, but potentially online. Thank you for your patience!

USAAAO will invite top 5 scoring students to be part of the main team that represents the USA at the International Astronomy and Astrophysics Olympiad in Colombia in September. Next 5 top scoring students will be invited to be a part of the USA’s guest team. All 10 students will be part of the weekly online training sessions with our coaches.

Unfortunately this year we are not able to organize a training camp for students.

Anyone can participate in NAC but only U.S. Citizens and Permanent Residents can represent USA at the IOAA.

Good luck to all the participants!

For any additional questions email us at!

First Round Complete

All the exams that have been to submitted have been graded and emails have been sent to all the participants! This year the cutoff is 11 and up. Currently there are 79 students that qualified for the National Astronomy Competition (NAC).

Unfortunately we discovered some typos in problems 24 and 30 and had to cancel them. Exam and the solutions can be found at

If you haven’t received an email, check with your proctor that they submitted the exam and email us at

Thank you all for participating and being interested in Astronomy and Astrophysics!

First Round Updates

We had a bit over 200 students registered to take the first exam from 25 states and several countries. We are gathering all the exams from proctors. All the participants will be notified through email of their score and the cutoff for the second round. We expect the grading to be done by 25th February and will post when the grading is done. Once all the exams are in we will post official solutions.

For any other questions regarding the exam email us at

Thank you for participating!

Registration closes tonight!

You can still register at this link. Financial aid application can be found in the registration or at this link.

First exam has been sent to all the proctors that registered so far! If there are some issues, notify us at

This year, we already have students from 24 states and several countries registered to take the exam. Remember, anyone can take the exam but only U.S. citizens and permanent residents are eligible to represent United States at the International Astronomy and Astrophysics Olympiad.

Best of luck to all the participants!

First round is a week away!

Students can take the test any time between February 10th and 16th. Any teacher or a test center can proctor a student. We will be emailing the instructions and the first round to the proctors when the registrations close.

Please register at this link. Financial aid application can be found in the registration or at this link.

Registration will close on February 9th, 2020.

You can read more about the tests on our selection process page, and you can find study materials on our resource page. If you have any questions, email us at!