The Invisible Particles Scientists Call Ghosts
Right now, as you're reading this, something is passing through your body.
100 trillion somethings. Every second.
They're going straight through your skin, your organs, and your bones. Most will continue through the floor, the ground, and possibly the entire planet. And you'll never feel a thing.
They're called neutrinos.
Scientists have nicknamed them ghost particles
They pass through almost everything. And no, they're not dangerous. They're just spectacularly antisocial.
So Where Are They Coming From?
Everywhere. The sun produces enormous numbers of them. Others come from distant stars and some of the most violent events in the universe. Scientists have known about neutrinos for decades. But catching the ones arriving from deep space is another matter entirely. So they did something extraordinary. They turned a cubic kilometer of Antarctic ice into a telescope.
Buried deep beneath the South Pole, thousands of sensors wait for the incredibly rare moment when a neutrino collides with something. That collision produces a faint flash of light.
And suddenly, something that traveled across the universe without leaving a trace gives itself away.
The observatory is called IceCube, and its discoveries helped earn physicist Francis Halzen the 2026 Nobel Prize in Physics, announced just last week.
We go through life trusting what we can see, hear, and touch.
And yet, at this very moment, trillions of particles are passing through us,
carrying evidence of events happening unimaginably far away.
Scientists have found a way to detect some of them. They're even using these ghostly visitors to investigate the universe's most powerful mysteries.
It makes me wonder how much of reality we're still completely unaware of. After all, the universe didn't suddenly become more extraordinary when we discovered neutrinos. It was extraordinary all along. We just didn't know what we were missing.
Harper Woods | Author of the Privileged Secrets trilogy
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