Universe

The universe is commonly defined as the totality of existence, including planets, stars, galaxies, the contents of intergalactic space, and all matter and energy. Definitions and usage vary and similar terms include the cosmos, the world and nature.

Scientific observation of earlier stages in the development of the universe, which can be seen at great distances, suggests that the universe has been governed by the same physical laws and constants throughout most of its extent and history. The universe is believed to be at least 93 billion light years in diameter and has existed for about 13.7 billion years, since it was created by the Big Bang.

There are various multiverse hypotheses, in which physicists have suggested that the universe might be one among many universes that likewise exist. The farthest distance that it is theoretically possible for humans to see is described as the observable universe. Observations have shown that the universe appears to be expanding at an accelerating rate, and a number of models have arisen to predict its ultimate fate.

Read more about Universe:  Etymology, Synonyms and Definitions, Size, Age, Contents, Structure, and Laws, Historical Models, Theoretical Models, Shape of The Universe

Other articles related to "universe, universes":

Hubble Deep Field - Scientific Results
... As the universe expands, more distant objects recede from the Earth faster, in what is called the Hubble Flow ... a considerably larger proportion of disturbed and irregular galaxies than the local universe galaxy collisions and mergers were more common in the young universe ... the rate of star formation over the lifetime of the universe ...
Shape of The Universe
... The shape or geometry of the universe includes both local geometry in the observable universe and global geometry, which we may or may not be able to measure ... section in comoving coordinates of the four-dimensional space-time of the universe ... If the observable universe is smaller than the entire universe (in some models it is many orders of magnitude smaller), one cannot determine the global structure by observation one is limited to a small patch ...
Optimus Prime - Transformers: Universe - Toys
... Universe Spy Changer Optimus Prime with Prowl (2004) The parallel-universe spanning Transformers Universe line also featured a yellow repaint of the Spy Changer version of Robots in Disguise Optimus Prime ...
Andromeda - Comics
... Andromeda (Marvel Comics), character native of Atlantis in the Marvel comics universe Andromeda (Pantheon) Laurel Gand codenamed Andromeda, character of the Legion of Super-Heroes in the DC comics universe Andromeda Shun, character in the Saint Seiya universe. ...
Universe (economics)
... In economics and marketing a universe is a population to be studied or measured ... In economics a population to be measured is described as a "universe", and the measures which are generated are intended to reflect the behavior of that population ... Different statistical surveys may measure related, but different, universes and have to be adjusted to reflect this difference ...

Famous quotes containing the word universe:

    Man is but a reed, the feeblest one in nature; but he is a thinking reed. The entire universe need not arm itself to crush him—a vapor, a drop of water suffices to kill him. But if the universe were to crush him, man would still be nobler than that which killed him, because he knows that he dies and the advantage which the universe has over him; the universe knows nothing of this.
    Blaise Pascal (1623–1662)

    Most men are like me. They cannot live in a universe where the most bizarre thought can in one second enter into the realm of reality—where, most often, it does enter, like a knife in a heart.
    Albert Camus (1913–1960)

    The universe is wider than our views of it.
    Henry David Thoreau (1817–1862)