17th September 1789 Mimas, the smallest and innermost of Saturn's major moons, is discovered by English astronomer William Herschel...

10th August 1675 The foundation stone for the Royal Greenwich Observatory (RGO) is laid by the first Astronomer Royal, John Flamsteed. ...

Fascinating anniversaries selected by Elizabeth Cocking. 6th July 1938 Lysithea, a moon of Jupiter, is discovered by Seth Barnes...

25th June 1997 A Russian uncrewed cargo spacecraft collides with the Mir Space Station during a docking attempt knocking out much of its...

15th May 1618 Johannes Kepler discovers the mathematical rule governing the orbits of our solar system’s planets. The image left is...

Each Month Elizabeth Cocking writes about poignant moments in the incredibly rich history of astronomy.

Elizabeth Cocking reviews February astronomical occurrences and who was born in this month in the past. 4th February 1962 A very rare and...

We end 2022 on a sad but important note, commemorating the contribution made and lives of Professor Jay Pasachoff, solar eclipse...

12 October 1915 Scottish born astronomer Robert Innes announced the discovery of the nearest star to our Sun, Proxima Centauri at a...

Monday 1 August, 6:30pm Join in to hear from Sydney City Skywatcher members as they present fascinating insights into many aspects of...