Bullets are fast - even a 9-millimeter handgun launches lead at Mach 1. And the bigger the bullet gets, the more grains of gunpowder it carries, the faster it goes. Modern rifles can fling the small pieces of metal at half the velocity needed to escape the gravitational pull of the Moon.

You've got all the pieces needed to pull this off.

Before (the victims) knew it, their vehicle was riddled with bullets. They had no way to escape.

He gets through too late who goes too fast

You cannot run faster than a bullet.

In fact these small galaxies are attracted by large galaxies during their gravitational pull, and they merge together to make a big center of galaxies. Some of them do not become pray to the gravitational pull of bigger galaxies due to vast distance of space, hence such petrified remains or fossils of small galaxies stay aloof but they survive and this finding may lead them to this conclusion.