The slow-motion galaxy collision, which scientists call UGC 2369, is about 424 million light-years away .
This material came from the "diminishing divide" between the two galaxies, the European Space Agency .
"Interaction with others is a common event in the history of most galaxies," ESA stated.
"For larger galaxies like the Milky Way, the majority of these interactions involve significantly smaller so-called dwarf galaxies.
Individual star systems like ours will likely be largely undisrupted, but distant observers will see the two galaxies gradually become one in some four billion years.
ESA nicknames this new merged galaxy "Milkomeda."
Hubble has captured galaxies all over the sky during its nearly 30 years of operations.