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Article: Age of the Universe
- Article from:
- Space Sciences
- Author:
CopyrightCOPYRIGHT 2002 The Gale Group Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Age of the Universe
The idea that the universe had a beginning is common to various religions and mythologies. However, astronomical evidence that the universe truly has a finite age did not appear until early in the twentieth century. The first clue that the universe has a finite age came at the end of World War I, when astronomer Vesto Slipher noted that a mysterious class of objects, collectively called spiral
nebula
, were all receding from Earth. He discovered that their light was stretched or reddened by their apparent motion away from Earth
—
the same way an ambulance siren's pitch drops when it speeds away from a stationary observer.
Hubble's Contribution
In the early ...
Related newspaper, magazine, and journal articles:
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700+ words
... ... galaxies making up our universe sprung from a point ... from a collision of two universes that had been separated ... would have given the universe the matter and energy ... analogy, describing the universe as a membrane, or sheet ... space, other parallel universes can drift, like other ...
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