What is "observation dome"

Usage examples of "observation dome".

The first transports were already vanishing behind the rim of the observation dome, long needles of ion efflux trailing them as they accelerated into the planetary shield.

On hands and knees, he scuttled put of the little observation dome, built by some race much smaller than humans that had once owned this ship long before it was sold, fifth-hand, to a poor clan of ignorant wolflings, freshly emerged from an isolation so deep they used to wonder if, in all the universe, they lived alone.

We spotted the edge of the escarpment that sheltered the observation dome.

So Flinx had the crawler's observation dome practically to himself.

There is an observation dome tucked behind the bridge, accessible only by a twisty ladder with rungs set much too close together.