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The Milky Way may be surrounded by ‘too many’ mini galaxies, new discoveries reveal

Astronomers have discovered a previously unknown pair of potential satellite galaxies orbiting the Milky Way. The location of these dwarf galaxies suggests that hundreds of other unknown mini-galaxies could be hiding around us — potentially challenging our understanding of the galaxy’s edges. 

A satellite galaxy is a clump of stars, either in a circular blob or a halo-like shape, that orbit the Milky Way independently from the rest of the galaxy. Our galaxy’s largest-known satellite is the Large Magellanic Cloud, which holds around 30 billion stars and can be viewed with the naked eye. Other known satellites only contain a few hundred thousand or a couple of million stars.

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