Colin Stanley Gum (4 June 1924 – 29 April 1960)[1] was an Australian astronomer known for his cataloguing of emission nebulae and the publication of his findings.
His father, a farmer who had served as a private in the Australian Imperial Force during the First World War,[2][3] died before Colin's birth.
[6] Gum catalogued emission nebulae in the southern sky at the Mount Stromlo Observatory using wide field photography.
Gum was part of the team, whose number included Frank John Kerr and Gart Westerhout, that determined the precise position of the neutral hydrogen plane in space.
Gum was appointed Head of the Observational Optical Astronomy programme at the University of Sydney in 1959.