Weigh the whole cosmos, then zoom into the sliver you can touch — and watch the recipe change from a star, to the Earth, to you. Every ingredient, drawn to true scale.
the journey continuesZoom out → The UniverseThe whole universe — the mass-energy budget from the Planck 2018 mission: ~68% dark energy, ~27% dark matter, ~5% ordinary (atomic) matter. Dark energy drives the accelerating expansion of space; dark matter's gravity holds galaxies together — but the nature of both is unknown.
The atoms — the ~5% of the universe made of chemical elements, by mass. Toggle between the Universe, You, Earth's crust, and the Sun to watch the same elements appear in completely different proportions. Tap any element for how it was forged and where you meet it in daily life.
Hydrogen and helium were made in the Big Bang. Everything heavier was forged later — carbon, oxygen and nitrogen in the cores of stars; iron and beyond in supernovae. Every atom in your body heavier than helium was made inside a star that died before the Sun was born.
Abundances are estimates with real ranges and rounding; the proportions — a dark universe, a hydrogen cosmos, a carbon-and-oxygen you — are what's robust.