Scale of the Universe

Scale of the Universe is an interactive educational website created by Cary Huang and Michael Huang. It allows users to explore and compare the sizes of objects across the entire universe by scrolling horizontally along a scale — from subatomic particles and cells to humans, planets, stars, galaxies, and the observable universe itself. The site’s key feature is its clear and intuitive visualization of extreme size differences, accompanied by concise scientific data. With its simple design and powerful sense of scale, the website is widely used for science education, presentations, and inspiring curiosity about the universe and humanity’s place within it.