Every atom in your body was forged in a dying star. Find out how many.
Your body is about 65% oxygen, 18% carbon, 10% hydrogen, and 7% other elements. The hydrogen in your body was created in the Big Bang — 13.8 billion years ago. But the carbon in your cells, the oxygen you breathe, the iron in your blood? All of that was cooked inside stars that exploded as supernovae before the Solar System even existed.
Every breath you take, every heartbeat, every thought — it's all stardust recombining for a brief, brilliant moment before returning to the cosmos.