He said empty "space" not empty "void"!. Spacetime is displaced/distorted by mass.... observable fact!
"Space" is a three-dimensional extent in which objects and events within our universe are positioned relative to each other. Space is unbounded, and considered to contain three linear dimensions at right angles to each other. Modern physics holds that it is part of a four-dimensional continuum known as spacetime (the fourth dimension not to be confused with a Eucldiean fourth dimension (N-space) as first described by Elte (1912), where the fourth dimension is an imaginary dimensions at right angle to each of the other three.
"Voids" on the other hand, are vast empty areas of our universe (containing very few, if any galaxies) situated between galactic supercluster complexes (or galactic filaments) . They were likely formed by periodic changes in the density of visible baryonic matter in the universe called "baryon acoustic oscillations". They exist due to mass collapse followed by implosion of the compressed baryonic matter in the Big Bang. They are thought to have started from small anisotropies largely due to quantum fluctuations in the early Universe, shortly after the "Planck" time. There seems to be a correlation between the locations of voids and temperature distribution of the Cosmic Microwave Background; most likely due to the Sachs–Wolfe effect. While colder regions appear to correlate with voids, the hotter regions seems to correlate with galactic filaments. The Sachs–Wolfe effect is not likely to be significant unless the Universe is dominated by dark energy, so the existence of these voids may well be physical evidence for dark energy.
No competent scientist would ever refer to space as "void". You should be careful to use correct terminology and defined terms otherwise your theories will come across as science-fiction or at best, crackpot physics.
