Urania, the Muse of Astronomy, is not like the other Muses. Not identifying as either male or female, Urania knows that mortals will see what mortals want to see. Urania also sees a world beyond what currently exists: a world where mortals look beyond the stars.

Tycho Brahe is Urania's latest charge: a brilliant and infuriating man who wants to map the heavens with unerring accuracy. He's convinced that the space beyond the Moon doesn't change.

One night in November 1572, Tycho and Urania behold a change in the sky. As they work together, they realize something new is on the horizon.