Halton Christian Arp was a highly acclaimed and influential American astronomer, whose remarkable contributions to the field of astronomy have left an indelible mark. One of his most notable and enduring achievements was the publication of the Atlas of Peculiar Galaxies in 1966, a seminal work that revolutionized our understanding of the cosmos by cataloguing a vast array of peculiar galaxies, including those that were undergoing interactions and mergers.
The atlas, a compilation of celestial bodies, was later subject to theoretical examination, revealing a vast array of examples that showcased the dynamic and constantly evolving nature of galaxies, with numerous instances exhibiting telltale signs of close encounters and mergers.
Arthur Arp's professional pursuits extended far beyond his groundbreaking research on galaxy interactions and mergers, as he was also a vocal critic of the prevailing Big Bang theory, which had garnered widespread acceptance within the scientific community. In his alternative cosmological framework, Arp proposed the notion of intrinsic redshift, a concept that challenged the prevailing understanding of the redshift phenomenon. According to this idea, the redshift of light emitted by distant galaxies is not solely the result of their recession velocity, but rather an inherent property of the galaxies themselves, suggesting that the universe may not be as homogeneous and isotropic as previously thought.
Person: Arthur Arp
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