NAC 2021- Aspiring the next generation of astronomers!

National Astronomy Challenge is the largest Olympiad on Astronomy and Space Science, with a participation of more than 25,000 students from over 250 schools across 15 countries to date. The event which started in 2017 has seen three editions so far and will be hosting its fourth edition in 2021.

NAC 2021 is an initiative to harness student’s curiosity and imagination while tapping their knowledge and understanding on Astronomy and Space. It is a learning platform that encourages the younger generation to associate with 21st Century domains like Astronomy and Space; and inspires them to emerge as the next generation of  Astrophysicists, Aeronautical engineers, Rocket Engineers, Scientists, and Researchers.

Format of the exam


Grade: 4-9 Students


Astronomy & Space Based



Format of the challenge

The format of the National Astronomy Challenge is online and would be conducted through pre-defined time. The assessment
platform is powered by a global assessment organization equipped with robust technology and proctoring tools.


Questions format

Evaluation Process

An Excursion to ISRO with NAC

The NAC Champions

First two toppers at national level get an opportunity to visit the ISRO facility at Sriharikota.

Interaction with Scientists,
Academicians and

3-days experiential astronomy camp

Award Felicitation

Not just great content, we have exciting prizes for our champions as well.


Why should you participate in NAC 2021?

Focused on Astronomy & Space

Building a generation of future space explorers and researchers is a rigorous process. NAC is a platform that handholds and nurtures aspirants/enthusiasts who desire to establish their careers in Astronomy and Space.

Designed & led by Astronomers

Led by Dr. Mila Mitra, former NASA scientist and her team of qualified engineers & astrophysicists who are passionate about astronomy. Children will be learning from the best out there.


Get an opportunity to visit the ISRO facility at Sriharikota, get access to an exclusive Cosmic Kids Club membership and learn in-depth about Space and Astronomy.

Access to world class content

Our philosophy of establishing awareness and imparting knowledge on Astronomy and Space Science is through Dynamic Content. Designed with precision and innovative strategies by experts, the preparatory content resonates with every grade and prepares you for the exam and beyond.

It is not just about the Success!

NAC is just more than an Olympiad. It doesn’t matter if you win or lose, the journey of learning is worth remembering!
Extending more knowledge this year, NAC offers a bouquet of unique programs to create an everlasting experience for the participants. Participants get the opportunity to go through a month-wise engagement journey with activities like – Conversation with Astronomers, Scientists and Academicians, Hands-on Workshops, Webinars, Quizzes and a lot more.


Webinar – Careers in Astronomy (15 th December)

Activity: Know Your Constellations - Grades 4 -5 (16 th December)

Webinar: JWST: The Generation Telescope (17th December)

Activity: Astrophotography through phone –Grades 6 -9 (20th December)

Citizen Science Project – Galaxy cruise (21 December)

Live Interactive Session – Ask an Astronomer (22nd December)

Participation Process

Important Dates

Make sure you don’t miss out on these important dates!
Please note : The dates of the award felicitation and visit to ISRO will be finalised based on the
prevailing COVID-19 condition.

Registration Starts

Aug 13th, 2021

Access to Content

Aug 24th, 2021


Oct 1st, 2021

Registration Closes

Dec 20th, 2021

Registration Starts


Access to Content

within 48 hours of registration

Registration Closes

Dec 26th, 2021


Grades – VIII-IX

Jan 8th, 2022

Grades- VI-VII

Jan 15th, 2022

Grades – IV-V

Jan 22nd, 2022
  • Content for preparation will be accessed through the learning system of NAC
  • Onboarding process will also be accessible through the learning system of NAC

Fee Section

Participation from India

INR 620/-/ per participant

  • Taxes as applicable

Participation from Overseas

USD 10/-/ per participant

  • Taxes as applicable

Teachers/school coordinator, if you want students to participate from school, not individual, please fill up the form, we will reach out to you within 24 hours.

    School Coordinator Contact Form

      Contact Us