Reference

	Meteorites: A concise account by A.A. Moss Year: 1975 Hits: 2902 Date insert: Monday, 31 December 2018
	NIGHTWATCH A Practical Guide to Viewing the Universe by Terence Dickenson, Mike Lynch Year: 2016 Hits: 1436 Date insert: Monday, 31 December 2018
	NightWatch: An Equinox Guide to Viewing the Universe by Unknown NA, Leslie C. Peltier Year: 1983 Hits: 3374 Date insert: Monday, 31 December 2018
	Not Yet Imagined A Study of Hubble Space Telescope Operations by Christopher Gainor Year: 2021 Hits: 692 Date insert: Sunday, 05 February 2023
	Observers Handbook 2016 by David M.F. Chapman Year: 2016 Hits: 7296 Date insert: Monday, 31 December 2018