Willem de Sitter

Willem de Sitter
De Sitter, c. 1930s
Born(1872-05-06)6 May 1872
Sneek, Friesland, Netherlands
Died20 November 1934(1934-11-20) (aged 62)
Leiden, South Holland, Netherlands
Alma materGroningen University
Known forDe Sitter Universe
Scientific career
FieldsPhysics
Doctoral advisorJacobus Kapteyn
Doctoral students
Signature

Willem de Sitter (6 May 1872 – 20 November 1934) was a Dutch mathematician, physicist, and astronomer. He is known for the de Sitter universe, which is a cosmological model that was named after him.