Players’ Corner

Last Updated: 8/26/2022


Want to watch just the digital twin overview? Click here

Welcome Back!

Thanks for joining us on our mission to learn space faster so we can secure space more quickly. This is the page to get the latest competition-relevant information.

Key Dates

Qualification Round: May 21 at 10am EDT to May 22 at 4:00pm EDT
Final Event: October 22-23


Access the latest version of the Rules here.


Bookmark our FAQ page, where we’re posting answers to the most asked questions we receive. If you have a specific question that isn’t answered in the Rules and isn’t on our FAQ page, email it to

Communicate With Your Peers

Join our competitor Slack Channel here to see Hack-A-Sat announcements in real-time and be part of the conversation during Quals and beyond.

Why Participate in Hack-A-Sat 3?

Different players have different motivations, but here are some common ones. You want to win. Hack-A-Sat 2 was hard. Hack-A-Sat 3 builds on 2, and you’re up for the challenge. In the Qualification Round, teams compete in a Jeopardy-style format, earning points based on speed and accuracy for a chance to win one of ten $10,000 cash prizes. The top 8 qualifying teams then advance to the Final Event, an attack / defend CTF. The top three ranked teams receive monetary prizes–$50,000 for first place, $30,000 for second place and $20,000 for third place. Plus, competing in Hack-A-Sat 3 gives you the advantage of learning space faster, preparing you for Hack-A-Sat 4, the first-ever fully on-orbit CTF. In short: If you don’t play this year, it will be tougher to get ready and harder to win Hack-A-Sat 4. You want to hack in space already. Hack-A-Sat 3 offers the most realistic space environment yet. Using Digital Twin technology, Hack-A-Sat 3 will mirror Moonlighter, a satellite designed and built this year as an on-orbit sandbox and host system for Hack-A-Sat 4. It will launch on the ISS resupply mission in the summer of 2023—right in time for Hack-A-Sat 4. So playing Hack-A-Sat 3 will prepare you well to hack in space already! You want to help secure the universe. Hack-A-Sat events build on each other to accelerate the community’s knowledge of hacking in space. The ultimate goal is to develop our collective skills and partnerships to secure the universe.

Skills to Include on Your Team

How to Prepare

Check out our Learn page to access helpful videos, past broadcasts, podcasts and other resources that will help you get familiar with the contest format and learn more about space and hacking.

The best way to prepare for Hack-A-Sat 3 is to practice the challenges from Hack-A-Sat 1 and Hack-A-Sat 2.

Hack-A-Sat 2 Quals Challenges:
Hack-A-Sat 2 Finals Challenges:
Hack-A-Sat 1 Quals Challenges:
Hack-A-Sat 1 Finals Challenges:

We recommend the following challenges to get you started if you’re newer to Hack-A-Sat. Once you’ve mastered these, you’ll be ready to explore more of the challenges. 

General Intro:



Ground Segment:

Comms Systems/RF:

Payload Modules/RE:


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