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Reference Terms
from Wikipedia, the free encyclopedia


In physics, spacetime is a model that combines 3-D space and 1-D time into a single construct called the space-time continuum (the 4th dimension).

Note:   The above text is excerpted from the Wikipedia article "Spacetime", which has been released under the GNU Free Documentation License.
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Space & Time News
February 22, 2017

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updated 12:56 pm ET