French astronomers have used a computer model to show that the Andromeda Galaxy may have gotten its current shape due to a huge collision with a smaller galaxy. Details here: http://blogs.discovermagazine.com/badastronomy/2010/11/23/andromeda-born-out-of-a-massive-collision/Original press release (In French): http://www.grandpublic.obspm.fr/Il-y-a-six-milliards-d-anneesCredit: GEPI, Observatoire de Paris / NAOC
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