Share this Article on Facebook Twitter Submit this article to Reddit Give this article a thumbs-up on StumbleUpon

Expanding universe

expanding Universe

World Encyclopedia | 2005 | Copyright

expanding Universe Theory of the origin and direction in time of the Universe. Physicists have attempted to explain the red shift phenomenon of some stars as resulting from a single, huge explosion which causes these stars to move away from our section of the Universe. The red shift occurs when, due to the Doppler effect, the perceived wavelengths of light from some stars are lengthened because of their outwards movement. There is also the opposite effect, a blue shift, but this does not occur as often. In 1929 Edwin Hubble demonstrated obsverationally the expansion of the Universe, although Georges Lemaître had suggested the theory in 1927. The idea of the expanding Universe set the stage for the Big Bang theory of the origin of the Universe. In 1998 scientists discovered evidence that the Universe is expanding at an accelerating rate. See also Hubble's law
Show all research tools

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"expanding Universe." World Encyclopedia. 2005. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>.

"expanding Universe." World Encyclopedia. 2005. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1O142-expandingUniverse.html

"expanding Universe." World Encyclopedia. 2005. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O142-expandingUniverse.html

Learn more about citation styles

expanding universe

A Dictionary of Astronomy | 1997 | Copyright

expanding universe Any model universe in which the space between widely separated objects is expanding. In the real Universe, neighbouring objects such as close pairs of galaxies do not move apart because their mutual gravitational attraction exceeds the effect of the cosmological expansion. However, the distance between two widely separated galaxies, or clusters of galaxies, will increase as the Universe expands.
Show all research tools

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"expanding universe." A Dictionary of Astronomy. 1997. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>.

"expanding universe." A Dictionary of Astronomy. 1997. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1O80-expandinguniverse.html

"expanding universe." A Dictionary of Astronomy. 1997. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O80-expandinguniverse.html

Learn more about citation styles

expanding universe

The Columbia Encyclopedia, 6th ed. | 2011 | Copyright

expanding universe see universe .

Show all research tools

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"expanding universe." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>.

"expanding universe." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1E1-X-expandin.html

"expanding universe." The Columbia Encyclopedia, 6th ed.. 2011. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-X-expandin.html

Learn more about citation styles

Free newspaper and magazine articles

Discovery that universe is expanding faster and faster earns physics...
Newspaper article from: The Christian Science Monitor; 10/4/2011
Return of the cosmological constant. (expanding universe and dark matter)
Magazine article from: Science News; 1/5/1991
3 win Nobel for discovery about expanding universe.(News)
Newspaper article from: The Seattle Times (Seattle, WA); 10/5/2011

Pictures from Google Image Search

Click to see an enlarged picture
Click to see an enlarged picture
Click to see an enlarged picture

See more pictures of Expanding universe

Related topics

  Be the first to connect related topics with this page!