Mystery AtlasFritz Zwicky
Swiss astronomer whose 1933 measurements of galaxy velocities in the Coma Cluster first suggested far more mass was present than could be seen, the earliest evidence for what became the dark matter problem; his findings were largely overlooked for decades.
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People
Fritz Zwicky is associated with Vera Rubin — Both independently found evidence of unseen mass decades apart; Rubin's 1970s rotation-curve work was not a direct continuation of Zwicky's largely-overlooked findings, but reopened the same problem and made it central to cosmology.
Science & Technology
- Dark Mattermissing mass first inferred 1933
Fritz Zwicky discovered Dark Matter — Zwicky's 1933 measurement of galaxy velocities in the Coma Cluster found far more mass was needed to hold the cluster together gravitationally than could be observed directly.