Halton Arp

Halton Arp was an astronomer known for his work highlighting unusual and peculiar galaxies that challenge standard cosmological models. He compiled the Atlas of Peculiar Galaxies, showcasing objects with irregular shapes, unusual structures, or apparent associations between distant objects and nearby galaxies. Arp questioned whether these closely aligned objects were truly related or just coincidentally aligned, prompting debate about galaxy formation and the universe’s expansion. His findings encourage scientists to reexamine assumptions in cosmology and the nature of celestial objects, emphasizing observational evidence that sometimes defies conventional explanations.