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Created page with "== Early Life and Education == Willem de Sitter was born on May 6, 1872, in Sneek, Netherlands. He was the son of a judge and showed an early interest in mathematics and physics. He studied at the University of Groningen, where he was influenced by the teachings of Jacobus Cornelius Kapteyn, a prominent astronomer of the time. == Career == After completing his studies, de Sitter worked at the Groningen Observatory|Groningen Astronomical Observatory..."
