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Дата изменения: Mon Mar 3 15:09:33 2003
Дата индексирования: Tue Dec 25 15:42:58 2007
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Will the Universe End in a Big Rip
Astronomy Picture of the Day
    


Will the Universe End in a Big Rip
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Will the Universe End in a Big Rip
Credit: Lynette Cook
Explanation: How will our universe end? Recent speculation now includes a pervasive growing field of mysterious repulsive energy that rips virtually everything apart. Although the universe started with a Big Bang, analysis of recent cosmological measurements allows a possibility that it will end with a Big Rip. As soon as few billion years from now, the controversial scenario holds, dark energy will grow to such a magnitude that our own Galaxy will no longer be able to hold itself together. After that, stars, planets, and then even atoms might not be able to withstand the expansive internal force. Previously, speculation on the ultimate fate of the universe centered on either a re-collapsing Big Crunch or a Big Chill. Although the universe's fate is still a puzzle, piecing it together will likely follow from an increased understanding of the nature of dark matter and dark energy.

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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

Based on Astronomy Picture Of the Day

Publications with keywords: big rip - big bang - dark energy - dark matter
Publications with words: big rip - big bang - dark energy - dark matter
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