Cosmic currents

Earth is radioactive, and life is only possible in reservations.

Trantor has already conquered half the Galaxy.

Among the worlds that still resist its influence is Sark, which prospers by exploiting its vassal planet, Florina, the origin of kyrt, the most sought-after commodity in the universe.

But now, Florina is threatened by a cosmic catastrophe. Who has an interest in keeping the truth about the approaching apocalypse a secret and having the memory of the only person who knows about it erased? Trantor? Sark? Or someone else?