Universe

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(Scientific description)
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According to the most widely accepted [[scientific theory]], the universe consists of a four-dimensional [[Wikipedia:continuum|continuum]] of [[Wikipedia:spacetime|spacetime]] (three dimensions of space and one of time) that grew out of an incredibly small "ball" of matter/energy (perhaps even a [[Wikipedia:Gravitational singularity|singularity]], a dimensionless point) in an event called the [[Big Bang]] about 13.5 billion years ago.
 
According to the most widely accepted [[scientific theory]], the universe consists of a four-dimensional [[Wikipedia:continuum|continuum]] of [[Wikipedia:spacetime|spacetime]] (three dimensions of space and one of time) that grew out of an incredibly small "ball" of matter/energy (perhaps even a [[Wikipedia:Gravitational singularity|singularity]], a dimensionless point) in an event called the [[Big Bang]] about 13.5 billion years ago.
  
It is currently unknown whether the universe extends beyond the ''observable'' universe, that part which we are able to observe (at least theoretically) from our particular vantage point at this particular time (see [[Wikipedia:Light cone]]); many cosmologists assume that there are portions of the universe which we can not presently see. Also thhere may be a larger [[http://en.wikipedia.org/wiki/Multiverse Multiverse]. Still, even the observable universe is (theorized to be) bigger than the 13.5 billion [[Wikipedia:Light year|light years]] that its age would seem to imply. This is because of the curvature of space-time; see Wikipedia's articles on the [[Wikipedia:Observable universe|observable universe]] and the central ideas of [[Wikipedia:Introduction to general relativity|general relativity]] for more information.
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It is currently unknown whether the universe extends beyond the ''observable'' universe, that part which we are able to observe (at least theoretically) from our particular vantage point at this particular time (see [[Wikipedia:Light cone]]); many cosmologists assume that there are portions of the universe which we can not presently see. Also there may be a larger [[Wikipedia:Multiverse|Multiverse]]. Still, even the observable universe is (theorized to be) bigger than the 13.5 billion [[Wikipedia:Light year|light years]] that its age would seem to imply. This is because of the curvature of space-time; see Wikipedia's articles on the [[Wikipedia:Observable universe|observable universe]] and the central ideas of [[Wikipedia:Introduction to general relativity|general relativity]] for more information.
  
 
[[Category:Science]]
 
[[Category:Science]]

Revision as of 06:44, 22 June 2008

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For more information, see the Wikipedia article:

The universe is generally understood to be everything which physically exists, including all forms of matter and energy, and all events that occur involving the two. It is sometimes contrasted with a supposed "other world" of some metaphysical nature (e.g., other "planes of existence").

Scientific description

According to the most widely accepted scientific theory, the universe consists of a four-dimensional continuum of spacetime (three dimensions of space and one of time) that grew out of an incredibly small "ball" of matter/energy (perhaps even a singularity, a dimensionless point) in an event called the Big Bang about 13.5 billion years ago.

It is currently unknown whether the universe extends beyond the observable universe, that part which we are able to observe (at least theoretically) from our particular vantage point at this particular time (see Wikipedia:Light cone); many cosmologists assume that there are portions of the universe which we can not presently see. Also there may be a larger Multiverse. Still, even the observable universe is (theorized to be) bigger than the 13.5 billion light years that its age would seem to imply. This is because of the curvature of space-time; see Wikipedia's articles on the observable universe and the central ideas of general relativity for more information.

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