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  1. 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 …

  2. 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 …

  3. UNIVERSE MAP

    Universe Map is your definitive guide to galaxies, stars, and cosmic structures — mapped, analyzed, and optimized for discovery and research.

  4. Universe | Definition & Facts | Britannica

    Oct 16, 2025 · Universe, the whole cosmic system of matter and energy of which Earth is a part.

  5. 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 …

  6. 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 …

  7. UNIVERSE Definition & Meaning - Merriam-Webster

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

  8. The Universe - Schools' Observatory

    So, the Universe is mainly made of nothing! Only around 5% of its mass is made up of everything we can see. The rest is made of dark matter (27%), which we can't see but can measure, as it …

  9. Solar System, Galaxy, Universe: What’s the Difference?

    Jun 1, 2017 · Many people are not clear about the difference between our Solar System, our Milky Way Galaxy, and the Universe. Let’s look at the basics. Our Solar System consists of our star, …

  10. Is the universe really one big black hole? - New Scientist

    Oct 7, 2025 · According to the equations that govern black holes, the larger one of these cosmic behemoths is the lower its average density – given that the universe contains a lot of relatively …