Old relay buoy now adrift in polar orbit.
Automated weather satellite emitting beacon pulses for vortex mapping.
Localized gravimetric distortion that seeds spiral storm patterns.
Tiny moon whose caves echo broadband comm pings.
Rock island locked inside hot-cold shear layer of gas giant.
Oceanic moon causing 20-m super-tides on Lutris Aurek.
Invisible mass concentration perturbing ship trajectories.
Navigation buoy captured by rogue gravity eddies.
Mirror-black crystal reflecting unknown star-fields.