John Jackson (astronomer)  John Jackson (11 February 1887 – 9 December 1958) was a Scottish astronomer. Born on 11 February 1887 at Mossvale Street, Paisley, Renfrewshire, Scotland, John Jackson was educated at Paisley Grammar School, studying a range of subjects including the sciences and French and German, but not Latin or Greek, which were compulsory if he intended to sit the entrance examinations for university. Having excelled at science, in particular chemistry, he decided to try for the entrance exam for Glasgow University in spite of not studying the classics. During the summer of 1903 he studied hard to improve his knowledge of Latin, which saw him pass the university entrance exam sufficiently well to be awarded a £25 bursary. Graduating in 1907 with a first class honours Master of Arts degree in mathematics and natural philosophy, he was then awarded a fellowship of £100 a year for further study. The following year he undertook a Batchelor of Science degree, again at Glasgow University, with special distinction in mathematics, natural philosophy, astronomy and chemistry, winning medals in most of these subjects. Astronomy was studied under the tutelage of Ludwig Becker. Jackson gained a thorough grounding in the fundamental elements of the subject to the extent required for a complete understanding of astronomy. He learned how to use a variety of astronomical instruments, how to correct observations and how to apply mathematical and arithmetical analysis to solve astronomical problems. Becker’s enthusiastic teaching methods must have had a profound influence on Jackson as he then chose to pursue a career in astronomy. As there seemed to be no possibility of obtaining an appointment in astronomy at Glasgow, Jackson decided to go to Cambridge University, and, after taking the entrance exam, was awarded a major scholarship to study at Trinity College as an ordinary undergraduate in 1909. He already knew as much spherical and dynamic astronomy as was then taught at Cambridge, but was introduced to new subjects including solar physics and astrophysics, whilst also furthering his knowledge of pure and applied mathematics. During his time at Cambridge he was awarded further medals for his work in astronomy. In 1914 a vacancy as Chief Assistant arose at the Royal Observatory Greenwich and Jackson was selected by the Astronomer Royal, Sir Frank Watson Dyson. During a Zeppelin raid on London Jackson was in the observatory grounds studying the Moon. Urged to take shelter from the bombs by Dyson, Jackson is reported to have said 'the observatory was built to observe the Moon, and I am going to observe the Moon'.