Atom Apr 2026

: If an atom were expanded to the size of a professional sports stadium, the nucleus (where almost all the mass lives) would be no larger than a marble sitting on the 50-yard line.

Our understanding of the atom has shifted from philosophical guesses to precise quantum models: What is an Atom?

: If you were to remove all the empty space from every person on Earth, the entire human population would fit inside the volume of a single apple. A Stardust Heritage : If an atom were expanded to the

Perhaps the most mind-bending fact about atoms is that they are .

: The simplest atoms, like hydrogen and helium, were created in the first few minutes after the universe began. A Stardust Heritage Perhaps the most mind-bending fact

: Heavier atoms, including the carbon in your DNA and the calcium in your bones, were forged deep inside ancient stars and scattered across space when those stars exploded as supernovas.

: Your body is a temporary vessel for these particles. Every year, you replace about 98% of the atoms in your body with new ones from the food you eat and the air you breathe. The Evolution of Discovery : Your body is a temporary vessel for these particles

The atoms in your body weren't always yours; they have a cosmic history: