Arp 107 hosts a special spiraling 'Seyfert' galaxy connected to a smaller galaxy by a 'bridge' of dust and gas.
Where it is: 465 million light-years from Earth in the constellation Leo Minor.
Why it's so special: This image from the Hubble Space Telescope captures the cosmic collision of two very different types of galaxies. While the large galaxy on the left shows a single spiral arm curving out from its core, with dust and gas glowing throughout, the much smaller galaxy on the right is little more than a bright core. Linking the two odd-looking galaxies is a tenuous bridge of dust and gas.
The larger galaxy is a Seyfert galaxy — a spiral galaxy that has an extremely bright, point-like active galactic nucleus powered by a supermassive black hole, according to NASA. About one in 10 galaxies are Seyfert galaxies. Interacting and merging galaxies — including Arp 107 — were first cataloged by American astronomer Halton Arp , who in 1966 published his Atlas of Peculiar Galaxies. In recent years Hubble has used its Advanced Camera for Surveys to make observations of these galaxies, including Arp-Madore 417-391 and the spectacular galactic triplet Arp 248.
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