Saturday, January 5, 2013

Half of Andromeda's satellite galaxies orbit in a mysterious disk

Source: Ars Technica

The authors of a new study are reticent to guess why, but it appears that our galaxy (the Milky Way), our nearest neighboring galaxy (Andromeda), and a number of much smaller galaxies are aligned within the same narrow plane. This alignment suggests the possibility that the Andromeda and the Milky Way galaxies affected the formation or orientation of each others' satellites. This new discovery will likely result in some changes in the current theories regarding formation of galaxies throughout the universe.

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