Primordial Black Hole Collision: What Happens If One Strikes You?

An encounter with a primordial black hole reads like science‑fiction, yet physicists can outline the brutal physics.

Primordial Black Hole Impact: Physics of a Fatal Encounter

If a subatomic black hole pierced your body, its event horizon—on the order of ↑ 10⁻⁹ m—would swallow atoms faster than light can escape, converting mass to energy in a flash. The result would be instant vaporisation of tissue, leaving no conventional injury to study.

“Even a microscopic black hole would vaporize matter instantly,” says a leading researcher at NASA.

The odds of such a collision are vanishingly small: cosmic surveys suggest a density of primordial black holes that translates to a ↓ 0.000001% chance of any one person being hit over a lifetime. Moreover, the Universe’s expansion dilutes their already‑sparse distribution, making a direct hit practically impossible. Should one be detected, the scientific payoff would be monumental, offering a window into the early Universe and quantum gravity. For now, the threat remains a theoretical curiosity rather than a practical emergency.