In today's installment of "Cosmic Snapshots That Make Us Feel Very Small," NASA's Astronomy Picture of the Day features three pairs of galaxies, each with its own dramatic backstory - or lack thereof.

The top pair, led by NGC 4650A, is not currently interacting, but it's got a blue stripe that suggests a violent past. Scientists suspect it's a polar ring galaxy, which is astronomer-speak for "the aftermath of a spectacular galaxy-on-galaxy collision." So, not interacting now, but definitely has a rap sheet.

In the middle, we have NGC 4650, a spiral galaxy with a bright central bar of stars, alongside a companion that looks like it's gravitationally flirting. But don't be fooled - their relative velocities suggest they're just passing through, like two strangers at a cosmic party who make eye contact but keep walking.

Finally, at the bottom, NGC 4622A and NGC 4622B are actively interacting. They're on track to merge into a single galaxy in about a billion years, which, on cosmic timescales, is basically "tomorrow." All six galaxies (or three pairs, if you're counting) are likely members of the larger Centaurus Galaxy Cluster, because even galaxies like to join social clubs.

Tune in tomorrow for a picture of "many moons," which sounds like a celestial nightclub act.