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The universe also includes the physical laws that influence energy and matter, such as conservation laws, classical mechanics, and relativity. The universe is often defined as "the totality of existence", or everything that exists, everything that has existed, and everything that will exist.
Learn how the universe evolved from the big bang to the present day, and what mysteries remain to be explored. Discover the key events, eras, and discoveries that shaped our cosmic story, from cosmic inflation to dark energy.
The universe is everything, including space, time, matter and energy. Learn how old the universe is, what it is made of, and how it has changed over time.
ViewSpace is a free, web-based collection of digital interactives and videos highlighting the latest developments in astronomy and Earth science. You can discover how different forms of light, invisible objects, and satellites help us understand the universe and our planet.
- Exoplanets. Worlds beyond our solar system.
- Stars. Giant balls of hot gas that burn for millions to billions of years.
- Black Holes. Concentrations of matter with gravity so powerful not even light can escape.
- Galaxies. Collections of stars, planets, and vast clouds of gas and dust bound together by gravity.
6 days ago · Learn about the universe, the whole cosmic system of matter and energy, from its origin in the big bang to its current expansion and structure. Explore the observable universe, the solar system, the galaxies, and the multiverse with Britannica's articles, videos, and news.
May 3, 2022 · The universe is literally everything, the sum of all existence. It includes all matter, like stars and galaxies. The universe also includes all radiation and all other forms of energy. No...
