Question: where did the a Swiss astronomer work most of his life, who proposed  a class of hypothetical redshift mechanisms that was proposed as an alternative explanation for the redshift-distance relationship?
Sentence (from "NGC 1614"): In 1971, Swiss astronomer Fritz Zwicky described it as a "blue post-eruptive galaxy, compact patchy core, spiral plumes, long blue jet SSW".
Relevant evidence: No