Milky Way is getting bigger, say scientists

Scientists have determined that the Milky Way is expanding. They say it will collide with a neighboring galaxy in four billion years.

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Source'http://www.dailymail.co.uk/sciencetech/article-5571143/Milky-Way-getting-bigger-say-scientists.html'
Author: - http://www.dailymail.co.uk/home/search.html?s=&authornamef=Press+Association, By Press Association and Maggie O'Neill For Dailymail.com