NASA's Astronomy Picture of the Day for August 10, 2026 featured an image credited to Rafael Sampaio showing three pairs of galaxies and an explanation of how each pair differs. According to the accompanying text, the two galaxies at the top are likely not interacting at present. The upper galaxy with the blue stripe, NGC 4650A, is described as a polar ring galaxy that may have resulted from a past collision.

The middle pair appears as though the two galaxies could be interacting gravitationally, but their relative speeds make this unlikely, the explanation stated. The larger of the two, NGC 4650, is a spiral galaxy with a bright bar of stars across its center. The bottom pair, NGC 4622A and NGC 4622B, are actively interacting and may merge into a single galaxy in roughly a billion years or so. The text said all of these galaxies are likely members of the larger Centaurus Galaxy Cluster.