Keeping Up with the Kosmos 💅 NASAHubble captured an interacting galaxy pair. Although it's hard to tell from this image, the two galaxies have incredibly energetic cores, also known as active galactic nuclei (AGN). If this same image reflected the full emission of both AGNs, their brilliance would hide the detail of the galactic pair photographed here. When an object causes another object to change or stretch this is considered a tidal force. The delicate streams of matter link the two galaxies together, as the direction of the tidal forces is away from the lower mass galaxy and toward the higher mass galaxy. Gas, dust, and even star systems could move toward one galaxy and away from the other as a result of tidal forces. The way galaxies evolve has a lot to do with the way they interact with one another. Merging, colliding or just brushing past are all interactions that could significantly affect their shape and structure. As common as these interactions may be – capturing an im...