A scientist who studies the structure, origin, and evolution of the entire universe.
From Greek kosmos (universe) + -logia (study) + -ist (one who practices). The term emerged in the 18th century as astronomy became sophisticated enough to theorize about the universe as a whole rather than just cataloging stars.
Cosmologists are basically time travelers in their minds—they use telescopes to look back billions of years and piece together how the universe was born, making them the closest thing we have to witnesses of the Big Bang itself.
Modern physics and cosmology excluded women from university positions and research until mid-20th century; prestigious cosmologist roles were male-default despite women's theoretical contributions.
Use 'cosmologist' neutrally for any practitioner; note that historical 'cosmologists' typically erased women's participation in theory development.
["cosmology researcher","cosmology scholar"]
Women cosmologists like Cecilia Payne-Gaposchkin, Vera Rubin, and others made foundational discoveries (stellar composition, dark matter evidence) often credited to male colleagues; deliberate attribution corrects this erasure.
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