Are We Swimming in It? The Dark Matter Passing Through Your Body Right Now

Imagine for a second that you are in a completely dark room. You see nothing, but you feel a weight in the air, a presence you cannot touch or smell. Now, you turn on the light and, to your surprise, the room still looks empty. However, something tells you it is not. Well, let me tell you that this is not a horror story; it is the reality of every second of your life. At this very moment, as you read this or hear my voice, billions of invisible particles are passing through your eyes, your heart, and your lungs without asking permission. You don't feel them, you don't see them, and the most brilliant scientists in the world have spent decades trying to catch a single one of them without success.

Welcome to episode 7 of 'The Realm of the Invisible'. Today we are going to talk about dark matter and its strange cousin, dark energy. But we are not going to talk about distant galaxies or giant telescopes (well, maybe a little), but about you. About how your body is, in reality, a transit hotel for the most elusive ghosts in the cosmos. To give you an idea of the magnitude of this mystery, consider the following:

• Everything you see around you—the stars, the planets, your cat, this screen, and even yourself—represents barely 5% of what exists in the universe.
• The rest, an overwhelming 95%, is something we call 'dark' simply because we have no idea what it is, other than the fact that it doesn't interact with light.
• Dark matter acts like an invisible cosmic glue, while dark energy functions like an engine stretching space itself.

It is as if we were trying to understand how an ocean works by looking only at the foam on the waves, ignoring the thousands of meters of depth below. But what if I told you that this 'depth' is flowing through your veins right now? Is it possible that we are literally swimming in a sea of ghostly particles without having realized it in all of human history? And most disturbing of all: is there any place in the entire vast universe where we can hide from them, or are we condemned to always be inhabited by the invisible?