Halton Christian Arp is an American astronomer mainly known for Intrinsic redshift and as a main critic of the Standard cosmology. He was born March 21 1927 in New York City. His bachelor's degree was awarded by Harvard (1949), and his Ph.D. from Caltech (1953). Afterwards he became a Fellow of the Carnegie Institution of Washington in 1953, performing research at the Mount Wilson Observatory and Palomar Observatory. Wikipedia
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