The Scale of the Universe

Explore the scale of the universe, from tiny particles to enormous galaxies. Discover how objects compare in size through an interactive science explorer, quick quizzes and guided journeys.

ZOOM FROM SMALL TO LARGE
Move through 62 orders of magnitude with drag, pinch and scale controls. Explore 318 objects, including DNA, cells, humans, planets, stars and galaxies.

COMPARE AND DISCOVER
See the scale of the universe through side-by-side comparisons. Compare up to four objects and switch between linear and logarithmic views to understand huge differences.

LEARN THROUGH PLAY
Test your understanding of the scale of the universe with four quiz modes: Which is bigger, Guess the size, Scale match and Order the scale. Each answer includes an explanation to help you learn.

FOLLOW YOUR CURIOSITY
Explore 10 guided journeys, browse themed collections and find a discovery of the day. Save favorites, revisit recent objects and track your discoveries, quiz results and achievements.

Learning content works offline. Ads require an internet connection. Illustrations are schematic, and listed measurements are approximate.

Start exploring the scale of the universe today and discover your place within it.