Andrew David Thackeray (19 June 1910 - 21 February 1978), was an astronomer trained at Cambridge University. He specialised 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. Read more