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Article: Andromeda: the cannibal galaxy
- Article from:
- The Independent (London, England)
- Article date:
- September 3, 2009
- Author:
CopyrightCopyright 2009 The Independent - London. Provided by ProQuest LLC. (Hide copyright information)
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It happened 2.3 million light years away and took 3 billion
years: time-lapse picture shows one galaxy eating up another
As cosmic events go, this one is hard to beat. Scientists have
built up a dramatic time-lapse picture of one galaxy swallowing up
another in a cannibalistic act that takes place over a period of 3
billion years - about as long as it took for slime-like Earthlings
to evolve into humans.
Astronomers have been able to witness a feature of galaxy
evolution that they have long suspected, but have been unable to
visualise, in which one swirling mass of stars devours another that
has come within its gravitational sphere of influence.
A telescopic study of the Andromeda galaxy ...