A. David Thackeray
Encyclopedia
Andrew David Thackeray was an astronomer trained at Cambridge University.

He went to school at Eton College
Eton College
Eton College, often referred to simply as Eton, is a British independent school for boys aged 13 to 18. It was founded in 1440 by King Henry VI as "The King's College of Our Lady of Eton besides Wyndsor"....

 and studied mathematics at King's College, Cambridge
King's College, Cambridge
King's College is a constituent college of the University of Cambridge, England. The college's full name is "The King's College of our Lady and Saint Nicholas in Cambridge", but it is usually referred to simply as "King's" within the University....

. He received a PhD on theoretical stellar spectroscopy in 1937 from the Solar Physics Laboratory in Cambridge. During his studies he worked at the Mount Wilson Observatory
Mount Wilson Observatory
The Mount Wilson Observatory is an astronomical observatory in Los Angeles County, California, United States. The MWO is located on Mount Wilson, a 5,715 foot peak in the San Gabriel Mountains near Pasadena, northeast of Los Angeles...

 in California from 1934 to 1936. He was Assistant Director of the Solar Physics Observatory at Cambridge Observatory
Cambridge Observatory
Cambridge Observatory is an astronomical observatory at the University of Cambridge in the East of England. It was first established in 1823 and is now part of the site of the Institute of Astronomy...

 from 1937 to 1948. He was then director of the Radcliffe Observatory
Radcliffe Observatory
Radcliffe Observatory was the astronomical observatory of Oxford University from 1773 until 1934, when the Radcliffe Trustees sold it and erected a new observatory in Pretoria, South Africa. It is a grade I listed building.- History :...

 in Pretoria from 1951 to his retirement in 1974. He became an honorary professor of the University of Cape Town
University of Cape Town
The University of Cape Town is a public research university located in Cape Town in the Western Cape province of South Africa. UCT was founded in 1829 as the South African College, and is the oldest university in South Africa and the second oldest extant university in Africa.-History:The roots of...

 and, a few days before his death, an associate of the Royal Astronomical Society.

He specialized in stellar spectroscopy. At a conference of the International Astronomical Union in Rome in 1952, he presented results of studies of variable stars in the Magellanic Clouds, indicating that the perceived age and size of the universe had to be doubled. He was the discoverer of Thackeray's Globules in 1950.

Personal life

He was born on 19 June 1910 in Chelsea, London
Chelsea, London
Chelsea is an area of West London, England, bounded to the south by the River Thames, where its frontage runs from Chelsea Bridge along the Chelsea Embankment, Cheyne Walk, Lots Road and Chelsea Harbour. Its eastern boundary was once defined by the River Westbourne, which is now in a pipe above...

. His father was the classical scholar H St. J Thackeray. He died in an accident on 21 February 1978.

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