NASA / ESA’s Hubble Space Telescope recently captured a pair of galaxies on a collision course. Classified as Arp 107 and located 465 million light-years from Earth, we see the left galaxy with a large, single spiral arm curving out from the core and around to below it, while the right galaxy has a bright core, but just a bit of very faint material.
You can see a broad curtain of gas connecting the two galaxies’ cores, which hang beneath them. There are also a few small stars and galaxies scattered around, visible in the black background. The larger of the two galaxies is actually a Seyfert galaxy, or one that houses an active galactic nuclei at its core. They are notable because despite the immense brightness of the active core, radiation from the entire galaxy can be observed.
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Arp 107 is part of a catalogue of 338 galaxies known as the Atlas of Peculiar Galaxies, which was compiled in 1966 by Halton Arp. It was observed by Hubble as part of an observing programme that specifically sought to fill in an observational ‘gap’, by taking limited observations of members of the Arp catalogue,” said the ESA.
