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What is space in universe

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What is space in physics? In classical physics, physical space is often conceived in three linear dimensions. Modern physicists usually consider it, with time, to be part of a boundless four-dimensional continuum known as spacetime. The concept of space is considered to be of fundamental importance to an understanding of the physical universe.
What is a physical universe? The physical universe is defined as all of space and time [a] (collectively referred to as spacetime) and their contents. Such contents comprise all of energy in its various forms, including electromagnetic radiation and matter, and therefore planets, moons, stars, galaxies, and the contents of intergalactic space.
What does the universe consist of? The universe is all of space and time [a] and their contents. 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 galaxies.
Why is the universe a space between Earth and the universe? It is also a space between the earth and the universe. The force that created the universe has no need of it. That is, the universe must make room for how human beings evolved in order to investigate the creation that gave rise to us. What would it take to make the universe a living thing? Why does the universe we live in exist?
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What Is Space? - A Definition of Our Universe …
We often refer to our expanding universe with one simple word: space. But where does space begin and, more importantly, what is it? Space is an almost perfect vacuum, nearly void of matter and...The current width of the observable universe is about 90...
https://www.space.com/24870-what-is-space.html
What is the Universe? - NASA Science
The universe is nearly 14 billion years old, our solar system is 4.6 billion years old, life on Earth has existed for maybe 3.8 billion years, and humans have been around for only a few hundred thousand years. In other words, the universe has existed...
https://science.nasa.gov/exoplanets/what-is-the-universe/
Outer space - Wikipedia
Outer space (or simply space) is the expanse beyond celestial bodies and their atmospheres. It contains ultra-low levels of particle densities, constituting a near-perfect vacuum of predominantly hydrogen and helium plasma, permeated by electromagnetic...
https://en.wikipedia.org/wiki/Outer_space
Overview - NASA Science
The Universe’s History 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...
https://science.nasa.gov/universe/overview/
What is Space? - Universe Today
First, some simple answers: space is everything in the universe beyond the top of the Earth’s atmosphere – the Moon, where the GPS satellites orbit, Mars, other stars, the...
https://www.universetoday.com/57734/what-is-space/
Universe - Wikipedia
The universe is all of space and time and their contents. 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...
https://en.wikipedia.org/wiki/Universe
Space - Wikipedia
Space is a three-dimensional continuum containing positions and directions. [1] . In classical physics, physical space is often conceived in three linear dimensions. Modern physicists usually consider it, with time, to be part of a boundless...
https://en.wikipedia.org/wiki/Space
ESA - Space for Kids - What is space? - European …
What is space? Access the image. In space, no one can hear you scream. This is because there is no air in space – it is a vacuum. Sound waves cannot travel through a vacuum. 'Outer space' begins about 100 km above the Earth, where the shell of …
https://www.esa.int/kids/en/learn/Our_Universe/Story_of_the_Universe/What_is_space
How does the universe work? - NASA Science
- NASA Science. How does the universe work? There are many mysteries of the universe we have yet to understand. Since the early 20 th century, scientists have known that the universe is expanding. In the 1990s, researchers discovered that, surprisingly,...
https://science.nasa.gov/astrophysics/science-questions/how-do-matter-energy-space-and-time-behave-u...
Universe | NASA Space Place – NASA Science for Kids
The Universe. Outer Space. Stars. Planets. Galaxies. Exploration. Everything! Articles, games and activities about our universe.
https://spaceplace.nasa.gov/menu/space/
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Universe
The universe is all of space and time and their contents. It comprises all of existence, any fundamental interaction, physical process and physical constant, and therefore all forms of energy and matter, …New content will be added above the current area of focus upon selectionThe universe is all of space and time and their contents. 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. Space and time, according to the prevailing cosmological theory of the Big Bang, emerged together 13.787±0.020 billion years ago, and the universe has been expanding ever since. Today the universe has expanded into an age and size that is physically only in parts observable as the observable universe, which is approximately 93 billion light-years in diameter at the present day, while the spatial size, if any, of the entire universe is unknown.Wikipedia... Read more