
Universe - Wikipedia
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 …
Universe - NASA Science
Sep 8, 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 …
Universe | Definition & Facts | Britannica
Oct 16, 2025 · Universe, the whole cosmic system of matter and energy of which Earth is a part.
UNIVERSE MAP
Universe Map is your definitive guide to galaxies, stars, and cosmic structures — mapped, analyzed, and optimized for discovery and research.
What is the universe? - Live Science
May 3, 2022 · It's quite a big question and a lot is still unknown about the universe, but we'll tell you everything that we do know, from how the universe was created, how old it is and what it's …
What is the Universe? Humanity’s Grandest Mystery
Aug 31, 2025 · It tells us that the universe began nearly 13.8 billion years ago in a cataclysmic event known as the Big Bang. From a state of unimaginable density and heat, space itself …
UNIVERSE | English meaning - Cambridge Dictionary
UNIVERSE definition: 1. everything that exists, especially all physical matter, including all the stars, planets…. Learn more.
What is the Universe? - AMNH
The universe is all the matter, energy, and space that exist. We can observe only a part of it - the observable universe.
Chronology of the universe - Wikipedia
The current accepted model of the history of the universe is based on the concept of the Big Bang: the universe started hot and dense then expanded and cooled. Different particles …
Overview - NASA Science
Oct 22, 2024 · The origin, evolution, and nature of the universe have fascinated and confounded humankind for centuries. New ideas and major discoveries made during the 20th century …