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.

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!

Research published in 2015 estimates the earliest stages of the universe's existence as taking place 13.8 billion years ago, with an uncertainty of around 21 million years at the 68% confidence level. [1] For the purposes of this summary, it is convenient to divide the chronology of the universe since it originated, into five parts.

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.

Sep 29, 2020 · Many believe that our Universe is just 13.8 billion years old. However, this is uncertain until proven with extreme accuracy. Sometimes, we can’t even pinpoint the certain age of an object here on Earth, let alone our Universe. The Universe may be infinite, or it might not be, but again, our perception is at play here.

The meaning of UNIVERSE is the whole body of things and phenomena observed or postulated : cosmos. How to use universe in a sentence.

Mar 15, 2022 · When the universe was just 10 -34 of a second or so old — that is, a hundredth of a billionth of a trillionth of a trillionth of a second in age — it experienced an incredible burst of expansion...

The observable universe is a spherical region of the universe consisting of all matter that can be observed from Earth; the electromagnetic radiation from these objects has had time to reach the Solar System and Earth since the beginning of the cosmological expansion.