Razor-thin sliver that ricochets debris on near misses.
Active asteroid venting incandescent gas.
Micro-moon seeded with old dark-matter drill rigs.
Elongate rock whose rotation beats a radio echo every 12 min.
Outer-belt dwarf world wrapped in perpetual dust storm.
Dense inner ring casting permanent dusk on arcology mirrors.
Small moon equipped with abandoned mag-trawl rigs.
Looping plasma arch traced by observatory drones.
Tight debris ring braided by twin-moon resonance.