She feels a contest. A battle fought, an equilibrium reached: not a truce, but an infinite limit, like an equation dividing by zero, a collision of two violent eternities. Mara queries Yang Liwei for telemetry and her sensorium fills with the terrified scream of gravitational instruments. She howls too, a feral sound, ecstatic and lost: a wolf baying at the stars. She knows what's happening. Too much power has gathered here. The universe is appalled by the paradox. Nothing that has glimpsed this collision of infinitudes can be allowed to escape. The cosmos must censor its embarrassment. It must sequester the anomaly.

The slope of warped space-time around them has become too steep, and now every path outward or forward bends back to the center where Light and Dark collide. The definition of "future" has become synonymous with the definition of "inward." This is why it's called an event horizon: For an object within the horizon, the path of all future things that can be done or seen leads inevitably down to the center. All events lead inward.

A singularity is forming around her. A kugelblitz: a black hole created by the concentration of raw energy.