The Last Comet

The Great Comet has crossed the sky at the turning of every age, and each time it does, the old powers quietly go dark.

Dr. Sable Okafor, a xeno-historian, is the first to notice the pattern. The comet is not a rock — it is a schedule, and it is on time.

With a salvage crew and six months before arrival, she races to prove that the cycle can be broken — before the comet makes her history too.