How to solve the puzzle in the observatory in The Outer Worlds 2

In The Outer Worlds 2, there are numerous smaller and larger puzzles scattered throughout different parts of Arcadia. In this text, we will focus on an intriguing puzzle in the Alexandra Monastery, which requires keen observation and knowledge of celestial bodies in a fictional star system.

How to solve the solar system model puzzle?

You will encounter the planetary system puzzle while exploring the Alexandra Monastery - a key location in the Golden Ridge region. After a battle in the open courtyard and activating the bells, you will gain access to another room in the eastern part of the complex. To the right of the entrance, you will find a terminal that will ask you to enter a three-digit access code.

The clue for the correct combination is a note with instructions lying nearby. According to the instructions:

1. The first digit corresponds to the number of moons of Elysium.
2. The second digit is the number of moons between Dorado and Elysium.
3. The third digit is the number of rotations Eden makes around Elysium before Praetor and Cloister complete one rotation around the planet.

To find the answers to the astronomic puzzle, you must go to the courtyard in front of the building and locate the moving model of the planet with its moons.

Now, just take a close look at the model, keeping the hints in mind. The above diagram will help you locate the appropriate objects in the system.

1. Elysium is the largest model, around which 4 moons orbit.
2. Dorado is the orange-green moon. Between it and the planet, there is only one celestial body - the tiny Eden.
3. Praetor and Cloister are the planet's farthest moons, whose full rotation takes quite a long time. Meanwhile, the small Eden is able to orbit Elysium up to 4 times.

You can observe all these relations on the moving model. With this new knowledge, you can return to the terminal with the puzzle and enter the correct combination: 4-1-4.

The correct combination activates the passage to the right of the terminal. Inside, you'll find a safe with a substantial amount of money and Pitchball Card: Feargus Urquhart. This special collectible provides a permanent bonus to stats - in this case, a 1% bonus to damage.

See also:

1. The Outer Worlds 2 review: Finding value in the flaws

The Outer Worlds 2

October 29, 2025

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