GRAVITATIONAL WAVES

Some scientists think gravitational waves exist and that the fabric of space is swarming with them, just as the sea is filled with swells and chop. There’s a theory to the effect that the evolution of the known universe is a single cycle in an oscillating system, a wave with a period unimaginably long.
How many people walk around thinking they are submicroscopic specks on a particle in an expanding and collapsing bubble in the laboratory of the heavens? Not many, but even to them, gravitational waves, assuming that they exist, are impossible to see with our eyes and difficult to envision even with the keenest mind’s eye because gravitational waves are four-dimensional.