It happened in a newly colonized, barely surveyed system near the rim of the galactic habitable zone.
I saw everything when then end came, screaming out of the sky to those below like the shriek of a banshee having her arms ripped off by a murderous giant. What happened next was the worst, when the impactor hit, causing massive seismic disruption and tsunamis across the face of the tiny planet.
Billions of tonnes of dust were kicked up into the atmosphere as a shockwave rippled across the world. Where it touched, outposts fell, forests burned, and the oceans boiled from the spread of the accompanying fireball of superheated dust, air, and steam.
Where was I in all this?
I was in an orbital station, monitoring satellite traffic and planetary weather patterns when the strike happened, watching it all with horror as ninety-percent of everything on the planet died, unable to even so much as warn those below…