"About 90-95% of large, massive galaxies are spirals, ellipticals, or lenticulars, while 5-10% are peculiar galaxies that defy standard categorization."
"When galaxies overlap, interact, or merge, their shapes change significantly, and gravitational interactions can trigger star formation, creating star-forming regions."
"The most common outcome of galactic mergers is another disk galaxy, although ellipticals can occasionally result from these interactions."
"Only 1-in-10,000 galaxies form rings, making this shape the rarest among galaxies, showcasing the diversity of galactic structures."
The Universe contains trillions of galaxies, predominantly large, massive ones that are spirals, ellipticals, or lenticulars. About 5-10% are peculiar galaxies, which exhibit unique interactions. These interactions can lead to significant shape changes and trigger star formation. Gravitational forces during overlaps or mergers can distort shapes and create star-forming regions. Halton Arp originally cataloged these transformations, revealing the beauty of galactic mergers. Most mergers result in another disk galaxy, while only 1-in-10,000 galaxies form rare ring shapes.
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