The universe is all of space and time [a] and their contents. [10] . It comprises all of existence, any fundamental interaction, physical process and physical constant, and therefore all forms of matter and energy, and the structures they form, from sub-atomic particles to entire galactic filaments.

Apr 1, 2025 · Discover the universe: Learn about the history of the cosmos, what it's made of, and so much more. Concentrations of matter with gravity so powerful not even light can escape. Collections of stars, planets, and vast clouds of gas and dust bound together by gravity. Worlds beyond our solar system.

Oct 29, 2024 · Earth and the Moon are part of the universe, as are the other planets and their many dozens of moons. Along with asteroids and comets, the planets orbit the Sun. The Sun is one among hundreds of billions of stars in the Milky Way galaxy, and most of those stars have their own planets, known as exoplanets.

Join astronomers and astrophysicists as they probe light years beyond the Milky Way, in Understanding The Universe, part of Discovery's popular television series. Narrated by actress Candice...

Scale of Universe is an interactive experience to inspire people to learn about the vast ranges of the visible and invisible world. Click on objects to learn more. Use the scroll bar to zoom in and …

Jan 18, 2017 · How did the universe begin—and what were its early days like? The most popular theory of our universe's origin centers on a cosmic cataclysm unmatched in all of history—the big bang.

Apr 16, 2025 · Learn more about what these groups of stars can (and can’t) tell us about our place in the universe. Check out these nine unearthly nightmares that could be happening right now in our own galaxy. Eek! Airplanes and satellites can experience changes in time! Read on to find out more. It all depends on what the spacecraft will do!

5 days ago · According to a recent study by the non-profit Explore Titan, a nuclear-fission propulsion spacecraft could enable the first crewed mission to Titan, Saturn's largest moon. What Blew Up the Local...

Aug 19, 2020 · The word universe comes from the Latin word “universus” that later became “universum”, and the old French word “univers” – which in a sense, means whole. One of the oldest and largest galaxy superclusters is the Hyperion supercluster.

Apr 16, 2025 · What Is the Big Bang? The Short Answer: The big bang is how astronomers explain the way the universe began. It is the idea that the universe began as just a single point, then expanded and stretched to grow as large as it is right now—and it is still stretching! What's This Big Bang All About?