Universe
lastmod 2026-11-10created 2021-08-052 edits
The universe refers to the whole of time and space and all the matter and energy within it. Astronomy and cosmology study the structure of celestial bodies such as galaxies, stars, and planets, as well as the origin and expansion of the universe, and the observable universe spans tens of billions of light-years. This page collects visualizations that convey the scale of the universe and related pages.
See also
Favorite site
- The Size of Space - Size comparison of things in space