Hubble observations have confirmed that Andromeda and the Milky Way will collide. Professor Mike Merrifield takes a break from exam marking to tell us more about it.

Check out the Hubble sit for more info at http://hubblesite.org/newscenter/arch...

Professor Merrifield works at the University of Nottingham.

Thanks to Fred Espenak: http://astropixels.com

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Videos by Brady Haran