Most of the visible mass is in the gas clouds, which have been moving slowly since the collision due to the energetic shock waves caused by the collision.

The sea was cold and grey, a tumbled mass of water, barely visible, yet seeming to crowd its menace right into the wheelhouse.

One of the crouching men held out a diaphanous blue mass: an aerogel sponge, barely visible under the night-running lights.

Dark matter was first proposed to account for the fact that galaxies appeared to be rotating faster than their visible mass should allow.

Bear in mind the visible mass of a berg is maybe a third of what's below the water.

Thus the amplitude of the galaxy rotation curve is related to the galaxy's visible mass.

It typically is discovered in adolescent boys and is associated with nasal congestion, a visible nasal mass, and nosebleeds (epistaxis).

A third of the building will be below ground to reduce its visible mass.

Furthermore, in patients with PSC, such diagnostic clues as a visible mass on imaging or biliary ductal dilatation may not be evident.

A cloud is a visible mass of condensed droplets or frozen crystals suspended in the air.