2019
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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 energy and matter, and the structures they form, from sub-atomic particles to entire galactic filaments.
The universe contains all the energy and matter there is. Much of the observable matter in the universe takes the form of individual atoms of hydrogen, which is the simplest atomic element, made of only a proton and an electron (if the atom also contains a neutron, it is instead called deuterium).
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 transformed cosmology – the term for the way we conceptualize and study the universe – although much remains unknown.
Jun 3, 2024 · Discover the universe: Learn about the history of the cosmos, what it's made of, and so much more. Explore: Worlds beyond our solar system. Giant balls of hot gas that burn for millions to billions of years. Concentrations of matter with gravity so powerful not even light can escape.
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...
Jan 17, 2017 · The most popular theory of our universe's origin centers on a cosmic cataclysm unmatched in all of history—the big bang.
3 days ago · universe, the whole cosmic system of matter and energy of which Earth, and therefore the human race, is a part. Humanity has traveled a long road since societies imagined Earth, the Sun, and the Moon as the main objects of creation, with the rest of the universe being formed almost as an afterthought.
Jul 19, 2021 · Our universe is a wild and wonderful place. Join NASA astronauts, scientists and engineers on a new adventure each week — all you need is your curiosity. Fly over the Antarctic tundra, explore faraway styrofoam planets, and journey deep into our solar system.
Jan 8, 2014 · It shows the main events that occurred between the initial phase of the cosmos -- where its properties were almost uniform and punctuated only by tiny fluctuations -- to the rich variety of cosmic structure that we observe today, ranging from stars and planets to galaxies and galaxy clusters.
Jun 24, 2024 · The galaxy is the most highly magnified region seen in the first 500 million years of our universe, giving astronomers an unprecedented window into how the stirrings of the first stars sculpted ...
