Peter Osman, Elizabeth Budek, Elizabeth Cocking and Toner Stevenson at Waverley STEMFEST, 22 May 2026. Sunday 24 May, Sydney City Skywatchers volunteered at Waverley Public School's STEMFEST. Elizabeth Cocking was prime organiser and, with Peter Osman, Elizabeth Budek and myself, we had a very busy time as over 3,500 people, mostly primary school children with their parents, attended. We were in good company with the University of New South Wales 'Future Now' team and WIRES

Photograph: Mike Chapman (centre) at a celebration for the BAA NSW Branch of the BAA centennial celebration in 1995. Left: Madeleine and Nick Lomb, Right Janette Brenan and Joe Kelly. Photograph courtesy Nick Lomb. This on-line library is named in memory of Michael Benedict Chapman, past president of Sydney City Skywatchers. Sydney City Skywatchers was previously called the New South Wales Branch of the British Astronomical Association (BAA NSW). Our members have, for more th

Find out about the Sun, our closest Star, from Lyn Smith FRAS.

The amount of lithium in the universe has changed since the Big Bang, can we measure the original amount?

A recap of the May 2026 meeting at Sydney Observatory.