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Elizabeth Cocking
Apr 30, 20203 min read
In this month: May
13 May 1861 John Tebbutt discovers the Great Comet of 1861, also known as Comet C/1861 J1, one of the most brilliant comets known. He...
Elizabeth Cocking
Nov 1, 20192 min read
In this month: November
27th November 1783 The first reference to black holes is mentioned by John Michell, an English natural philosopher, in a paper for the...
Elizabeth Cocking
Jun 30, 20192 min read
In this month: July 2019
5th July 1687 The book Principia is published by Sir Isaac Newton. Written in Latin with the title Philosophiæ Naturalis Principia...
Elizabeth Cocking
Jun 3, 20191 min read
Did you know? Comets...dirty snowballs
The long and short of it….. the orbital period of comets can range from long period comets like Comet McNaught, 92,700 years, to Comet...
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