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Cassini's Constellations

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Cassini's Constellations
Technical information

Dominique, Comte de Cassini succeeded his father as director of the Paris Observatory; but his plans for its restoration and re-equipment were upended by the animosity of the National Assembly. He resigned and was thrown into prison. Now released, he plans to move to the countryside, but he has left behind some critical observations. Seek them out in the Paris Observatory and return them to Cassini.


Assassin's Creed: Unity

Memory type

Paris story


"Escort" Mission


The Condorcet Method

Historical information

Arno Dorian


Paris, French Republic


August 1794

Cassini's Constellations was a virtual representation of one of Arno Dorian's genetic memories, relived by a Helix initiate through the Helix Navigator.


Jean-Dominique Cassini tasked Arno to recover his astronomical observations before the astronomer left Paris.


  • Cassini: This is most bothersome. Most botherome, indeed. I simply cannot leave without them!
    I am the Comte de Cassini. Until some months ago, the director of the Paris Observatory.
  • Claude-Marie-Louise: The National Assembly meddles in everything!
  • Cassini: We must flee to the countryside. But I have foolishly left several celestial observations in the Observatory itself.
  • Claude-Marie-Louise: It would be ever so delightful if you could recover those.

Arno infiltrated the Observatory and recovered Cassini's papers. He then returned to Cassini and his wife.

  • Cassini: Ah, yes! These observations confirm several of my ideas.
  • Claude-Marie-Louise: My husband means to say, "Thank you for your much-needed help".
  • Cassini: Let's quit this city, my love, while we're able.


Arno recovered Cassini's papers, allowing him to retire to the countryside.


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