It is hypothesized that a more compact intruder galaxy crossed in front of the Tadpole Galaxy—from left to right from the perspective of Earth—and was slung around behind the Tadpole by their mutual gravitational attraction. During this close encounter, tidal forces drew out the spiral galaxy's stars, gases and dust, forming the conspicuous tail. The intruder galaxy, estimated to lie about 300,000 light-years behind the Tadpole, can be seen through foreground spiral arms at the upper left.
That must be a pretty violent interaction. That's how I'd like to die, something cosmic.

it looks like a giant sperm

Us dumb ***** are tier 1

Obviously the second one.
My password is password