Permanent historical factsheet

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United States · Science / Astronomy. Chronological records rendered directly from the World History Database.

2Records
1954–1956Date range
1Named people
1Places

Chronological records

1954

Walter Baade1954

Mount Wilson Observatory · Science / Astronomy

Baade distinguishes stellar populations and revises Cepheid distances used in estimates of cosmic expansion

1956

Walter Baade1956

Mount Wilson Observatory · Science / Astronomy

Baades corrections help make the cosmic expansion rate more realistic for Big Bang timescales

Names involved

Walter Baade

Provenance

This factsheet is generated from stored World History Database records matching the country, broad category, detailed category and exact Event value shown above. Duplicate display records are collapsed; database wording is otherwise preserved. Source provenance varies by record, so formal academic citation should be checked against the relevant primary source, archive or specialist historical reference.