Sensors

And then—the blinding light as the final explosion ignited inside the planet’s core, and the end of it all, a relief and an agony both equally complete. Cyclonus knew it was over long before the end came for him: even as he caught the glimpses of bright flares as Scourge and the last few of the Sweeps disintegrated into ash and flame, his sensors told him it would be nine minutes and forty-six seconds before the blast wave caught up and incinerated him as well.

[...]

But now he had done all that had been required of him, and death was coming, swiftly. Seven minutes and twelve astroseconds left, and Cyclonus permitted the wall to collapse; he let the all-devouring love back out, that he might feel the final grief for his lord, the terrible dark quasar at the heart of his galaxy.