A Galaxy Collision in NGC 6745 . ... Hubble Heritage Team , NASA Explanation: Galaxies don't normally look like this. NGC 6745 actually shows the results of two galaxies that have been colliding for only hundreds of millions of years. Just off the above photograph to the lower right is the smaller galaxy, moving away. ... Although it is likely that no stars in the two galaxies directly collided , the gas, dust , and ambient magnetic fields do interact directly. ... NASA Official: Jay Norris. ...