DARK MATTER: THE INVISIBLE UNIVERSE, THE FIFTH DIMENSION, AND THE MYSTERY OF HIDDEN REALITY
DARK MATTER: THE INVISIBLE UNIVERSE, THE FIFTH DIMENSION, AND THE MYSTERY OF HIDDEN REALITY If It Is Matter, Why Can’t We See It? There is a deceptively simple question that may hide one of the greatest scientific revolutions of the 21st century: If dark matter is truly matter, why is it invisible? The question seems contradictory. We define matter as that which possesses mass, participates in gravitational dynamics, and, in everyday terms, occupies space. However, dark matter does not emit light, does not reflect light, and apparently does not absorb electromagnetic radiation in any detectable way. We cannot observe it directly with conventional telescopes. And yet, there is extraordinarily strong evidence that something invisible is exerting gravitational pull across the Universe. NASA summarizes the situation clearly: dark matter does not appear to interact with the electromagnetic spectrum, but it possesses mass, and its presence can be inferred through its gravitatio...
