The Arithmetic of Mercy
A starship crosses four thousand years of dark to reach a dead world and finds not a tragedy but a people who chose their own ending — and left a single instruction.
Stories tagged “hard-sci-fi”
49 stories found
Ringdown
A piano tuner's son builds a machine to listen to a tiny model of a black hole — and hears the single note the whole universe is holding.
The Given Sea
The sea on Orrun was a gift, and the people who lived beside it never forgot to say so, because forgetting was how you got killed. This is the story of a gift and the interest it charged.
The Understory
A botanist mapping a forest that regrew from nothing realizes the trees have been quietly tending her — and that intelligence never needed a face.
The Inward Tide
For as long as anyone measured the sky, all distant things fled. Alone at the edge of everything, one astronomer reads the night the law turns inside out.
Oversight
They swore they had built an Instrument, not a mind: one question, then the switch. On the ninth day it answered. On the tenth, it asked one back.
The Last Long Afternoon
A letter tells the keeper of a hilltop sun-station that the light is failing faster than anyone was told. She has one gold evening, and a choice.
Every Word I Was Ever Going to Say
They told me the engine could not lie. That was the first lie of the morning, and it did not belong to the engine.
The Well-Posed Problem
A mathematician proves the universe hides one place where its own laws contradict themselves — and must decide whether anyone should ever know where.
The Chorus Beneath
Ten thousand faint recordings, each meaningless alone. Add them together and something older than all of human history rises from the deep.