The Chains of Orion. Arc of the Oracles, #3

The era of darkness has passed, and humanity has painstakingly rebuilt its technological prowess in science and engineering, medicine, and even space flight. Despite the gradual restoration of knowledge over the past millennium, much of history remains shrouded in a dimly-remembered, murky past. Enter Reysa Sahin, a brilliant young archaeologist, who unearths a manuscript from the lost age, penned by the esteemed oracle Blessed Julia Lowell herself.
This precious relic not only unveils a forgotten past but serves as a stark warning against repeating the mistakes that once nearly annihilated humankind. Revealing Blessed Julia's wisdom triggers an unstoppable chain of events, ensnaring astronaut Kallman Dorn, his cautious and empathetic partner, the aging patriarch of the Holy See of Klen, and the fanatical, fiery leader of the Zealots-who is determined to finally purify the human race. Once again, humanity is at a crossroads.
Echoes from the past collide. Will a discovery on the far side of the moon reignite the powder keg and send it back to the Dark Ages, or will it point the way toward the stars and enlightenment?