Hubble Space Telescope spots a cosmic 'tug of war' between galaxies that could lead to a collision (image) 

 NASA's Hubble Space Telescope has observed a cosmic 'tug of war' between two galaxies that have lasted for tens of millions of years and could end in a collision. 

https://cdn.mos.cms.futurecdn.net/Y69RGuo7rVuELNWnM8A8F7.png

https://www.space.com/hubble-telescope-cosmic-tug-of-war-galaxies-collision