unseen

If something unseen -- almost a "cosmic ghost" -- distorts spacetime between a pulsar and Earth, the timing of its pulses shifts slightly.

D’Angelo asks that question — worries it, caresses it, plumbs its unseen depths — no fewer than two dozen times in what might have been his signature hit.

Rare outtakes from films like “Home Alone,” unseen footage and home videos round out the film and give it a piercing intimacy.

By studying how the light was distorted, researchers could calculate how much matter was packed inside the unseen object.

The levee also had the power to reveal otherwise unseen intangibles.