Plots(1)
A space mission discovers the dramatic history of the Milky Way. Professor Brian Cox reveals how our galaxy endured multiple collisions as rival galaxies fought for survival. (BBC iPlayer)
Cast
![Brian Cox](http://image.pmgstatic.com/cache/resized/w88h116crop/files/images/creator/photos/166/315/166315458_8c5025.jpg)
Brian Cox (guide)
UK
Best series:
Doctor Who (2005) (series)
Mandy (2019) (series)