Billions of cosmic particles stream through your body every second

Since long before the first human drew breath, invisible messengers from the cosmos have been passing through every living body on Earth — a silent, ceaseless communion between the universe and its inhabitants. Today, scientists are mapping this ancient flux with precision, not out of fear, but out of the quiet necessity that comes with reaching beyond our atmosphere. The particles harm no one standing on the ground, yet their presence shapes the calculus of space travel, aviation safety, and the future of human exploration.