Scale of the Universe — Interactive Explorer

Explore the scale of the universe from subatomic particles to the observable cosmos. Navigate through 60+ objects spanning every order of magnitude — from quarks and atoms to planets, stars, and the observable universe.

What You Can Explore

Journey from the Planck length (10⁻³⁵ m) all the way to the observable universe (8.8×10²⁶ m). Compare objects like quarks, atoms, cells, insects, humans, mountains, planets, stars, and galaxies — each explained with fun facts and size comparisons.

For Teachers

Structured lesson packs with learning objectives, discussion questions, curriculum-aligned assignments, and downloadable PDF assessments. Three free starter packs and premium content for advanced students.