- Edmond Halley: Charting the Heavens and the Seas, by Alan H. Cook: Clarendon Press, 1998.
Adopted by IAU
Jan 30, 2016
English vessel which took Edmond Halley to Saint Helena in 1676 to conduct a survey of the stars in the southern hemisphere. While there, Halley observed the 1677 transit of Mercury which enabled him to make one of the earliest calculations to estimate the size of the solar system.