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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.
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 energy.
Is our solar system shaped like a croissant? Is there really alien life on Venus? Discover the extraordinary explorers that are journeying through our cosmos...
Jul 4, 2024 · Unlike the observable universe, the universe is possibly infinite and without spatial edges. Zoom out from Earth's solar system to the Milky Way Galaxy, the Local Group, and beyond Scale of the universe.
Discover the universe: Learn about the history of the cosmos, what it's made of, and so much more.
The Structure of the Universe (How to understand the Universe in 10 minutes) This page covers what I think is the most important thing to understand about space: The basic structure of the Universe. It's a long page but it's not actually very difficult.
Jul 9, 2024 · Answer your questions: What is the Big Bang? What is a black hole? What is a planet? What is gravity? Articles, games and activities about our universe.
Discover how the universe works, explore how it began and evolved, and search for life on planets around other stars as we seek to understand the universe and.
